List of computing and IT abbreviations
This is a list of computing and IT acronyms, initialisms and abbreviations.
0–9
- 1GL—First-Generation Programming Language
- 1NF—First Normal Form
- 10B2—10BASE-2
- 10B5—10BASE-5
- 10B-F—10BASE-F
- 10B-FB—10BASE-FB
- 10B-FL—10BASE-FL
- 10B-FP—10BASE-FP
- 10B-T—10BASE-T
- 100B-FX—100BASE-FX
- 100B-TX—100BASE-TX
- 100BVG—100BASE-VG
- 286—Intel 80286 processor
- 2B1Q—2 Binary 1 Quaternary
- 2FA—Two-factor authentication
- 2GL—Second-Generation Programming Language
- 2NF—Second Normal Form
- 3GL—Third-Generation Programming Language
- 3GPP—3rd Generation Partnership Project – 3G comms
- 3GPP2—3rd Generation Partnership Project 2
- 3NF—Third Normal Form
- 386—Intel 80386 processor
- 486—Intel 80486 processor
- 4B5BLF—4-bit 5-bit Local Fiber
- 4GL—Fourth-Generation Programming Language
- 4NF—Fourth Normal Form
- 5GL—Fifth-Generation Programming Language
- 5NF—Fifth Normal Form
- 6NF—Sixth Normal Form
- 8B10BLF—8-bit 10-bit Local Fiber
- 802.11—Wireless LAN
A
- A11Y—Accessibility
- AAA—Authentication Authorization, Accounting
- AABB—Axis Aligned Bounding Box
- AAC—Advanced Audio Coding
- AAL—ATM Adaptation Layer
- AALC—ATM Adaptation Layer Connection
- AARP—AppleTalk Address Resolution Protocol
- ABAC—Attribute-Based Access Control
- ABCL—Actor-Based Concurrent Language
- ABI—Application Binary Interface
- ABM—Asynchronous Balanced Mode
- ABR—Area Border Router
- ABR—Auto Baud-Rate detection
- ABR—Available Bitrate
- ABR—Average Bitrate
- ABR—Adaptive Bitrate (Streaming)
- AC—Acoustic Coupler
- AC—Alternating Current
- ACD—Automatic Call Distributor
- ACE—Advanced Computing Environment
- ACID—Atomicity Consistency Isolation Durability
- ACK—ACKnowledgement
- ACK—Amsterdam Compiler Kit
- ACL—Access Control List
- ACL—Active Current Loop
- ACM—Association for Computing Machinery
- ACME—Automated Classification of Medical Entities
- ACP—Airline Control Program
- ACPI—Advanced Configuration and Power Interface
- ACR—Allowed Cell Rate
- ACR—Attenuation to Crosstalk Ratio
- AD—Active Directory
- AD—Administrative Domain
- ADC—Analog-to-Digital Converter
- ADC—Apple Display Connector
- ADB—Apple Desktop Bus
- ADCCP—Advanced Data Communications Control Procedures
- ADO—ActiveX Data Objects
- ADSL—Asymmetric Digital Subscriber Line
- ADT—Abstract Data Type
- AE—Adaptive Equalizer
- AES—Advanced Encryption Standard
- AF—Anisotropic Filtering
- AFP—Apple Filing Protocol
- AGP—Accelerated Graphics Port
- AH—Active Hub
- AI—Artificial Intelligence
- AIX—Advanced Interactive eXecutive
- Ajax—Asynchronous JavaScript and XML
- AL—Active Link
- AL—Access List
- ALAC—Apple Lossless Audio Codec
- ALGOL—Algorithmic Language
- ALSA—Advanced Linux Sound Architecture
- ALU—Arithmetic and Logical Unit
- AM—Access Method
- AM—Active Matrix
- AMOLED—Active-Matrix Organic Light-Emitting Diode
- AM—Active Monitor
- AM—Allied Mastercomputer
- AM—Amplitude Modulation
- AMD—Advanced Micro Devices
- AMQP—Advanced Message Queuing Protocol
- AMR—Audio Modem Riser
- ANN—Artificial Neural Network
- ANSI—American National Standards Institute
- ANT—Another Neat Tool
- AoE—ATA over Ethernet
- AOP—Aspect-Oriented Programming
- APCI—Application-Layer Protocol Control Information
- API—Application Programming Interface
- APIC—Advanced Programmable Interrupt Controller
- APIPA—Automatic Private IP Addressing
- APL—A Programming Language
- APR—Apache Portable Runtime
- ARC—Adaptive Replacement Cache
- ARC—Advanced RISC Computing
- ARIN—American Registry for Internet Numbers
- ARM—Advanced RISC Machines
- AROS—AROS Research Operating System
- ARP—Address Resolution Protocol
- ARPA—Address and Routing Parameter Area
- ARPA—Advanced Research Projects Agency
- ARPANET—Advanced Research Projects Agency Network
- AS—Access Server
- ASCII—American Standard Code for Information Interchange
- AuthIP—Authenticated Internet Protocol
- ASG—Abstract Semantic Graph
- ASIC—Application-Specific Integrated Circuit
- ASIMO—Advanced Step in Innovative Mobility
- ASLR—Address Space Layout Randomization
- ASM—Algorithmic State Machine
- ASMP—Asymmetric Multiprocessing
- ASN.1—Abstract Syntax Notation 1
- ASP—Active Server Pages
- ASP—Application Service Provider
- ASR—Asynchronous Signal Routine
- AST—Abstract Syntax Tree
- AT—Advanced Technology
- AT—Access Time
- AT—Active Terminator
- ATA—Advanced Technology Attachment
- ATAG—Authoring Tool Accessibility Guidelines
- ATAPI—Advanced Technology Attachment Packet Interface
- ATM—Asynchronous Transfer Mode
- AuthN—Authentication
- AuthZ—Authorization
- AV—Antivirus
- AVC—Advanced Video Coding
- AVI—Audio Video Interleaved
- AWK—Aho Weinberger Kernighan
- AWS—Amazon Web Services
- AWT—Abstract Window Toolkit
B
- B2B—Business-to-Business
- B2C—Business-to-Consumer
- B2E—Business-to-Employee
- BAL—Basic Assembly Language
- BAM—Block Availability Map
- Bash—Bourne-again shell
- BASIC—Beginner's All-Purpose Symbolic Instruction Code
- BBP—Baseband Processor
- BBS—Bulletin Board System
- BC—Business Continuity
- BCC—Blind Carbon Copy
- BCD—Binary Coded Decimal
- BCD—Boot Configuration Data
- BCNF—Boyce–Codd normal form
- BCP—Business Continuity Planning
- BE—Backend
- BEEP—Blocks Extensible Exchange Protocol
- BER—Bit Error Rate
- BFD—Bidirectional Forwarding Detection
- BFD—Binary File Descriptor
- BFS—Breadth-First Search
- BFT—Byzantine Fault Tolerant
- BGP—Border Gateway Protocol
- BI—Business Intelligence
- BiDi—Bi-Directional
- bin—binary
- BINAC—Binary Automatic Computer
- BIND—Berkeley Internet Name Domain
- BIOS—Basic Input Output System
- BJT—Bipolar Junction Transistor
- bit—binary digit
- Blob—Binary large object
- Blog—Web Log
- BMP—Basic Multilingual Plane
- BNC—Baby Neill Constant
- BOINC—Berkeley Open Infrastructure for Network Computing
- BOM—Byte Order Mark
- BOOTP—Bootstrap Protocol
- BPDU—Bridge Protocol Data Unit
- BPEL—Business Process Execution Language
- BPL—Broadband over Power Lines
- BPM—Business Process Management
- BPM—Business Process Modeling
- bps—bits per second
- BRM—Business Reference Model
- BRMS—Business Rule Management System
- BRR—Business Readiness Rating
- BRS—Broadband Radio Service
- BSA—Business Software Alliance
- BSB—Backside Bus
- BSD—Berkeley Software Distribution
- BSoD—Blue Screen of Death
- BSS—Block Started by Symbol
- BT—BitTorrent
- BT—Bluetooth
- B TAM—Basic Telecommunications Access Method
- BW—Bandwidth
- BYOD—Bring Your Own Device
- Byte—By eight (group of 8 bits)
C
- CA—Computer Accountancy
- CAD—Computer-Aided Design
- CAE—Computer-Aided Engineering
- CAID—Computer-Aided Industrial Design
- CAI—Computer-Aided Instruction
- CAM—Computer-Aided Manufacturing
- CAP—Consistency Availability Partition tolerance (theorem)
- CAPTCHA—Completely Automated Public Turing Test to tell Computers and Humans Apart
- CAT—Computer-Aided Translation
- CAQ—Computer-Aided Quality Assurance
- CASE—Computer-Aided Software Engineering
- cc—C Compiler
- CC—Carbon Copy
- CD—Compact Disc
- CDE—Common Desktop Environment
- CDFS—Compact Disk File System
- CDMA—Code-Division Multiple Access
- CDN—Content Delivery Network
- CDP—Cisco Discovery Protocol
- CDP—Continuous Data Protection
- CD-R—CD-Recordable
- CD-ROM—CD Read-Only Memory
- CD-RW—CD-Rewritable
- CDSA—Common Data Security Architecture
- CERT—Computer Emergency Response Team
- CES—Consumer Electronics Show
- CF—Compact Flash
- CFD—Computational Fluid Dynamics
- CFG—Context-Free Grammar
- CFG—Control-Flow Graph
- CG—Computer Graphics
- CGA—Color Graphics Array
- CGI—Common Gateway Interface
- CGI—Computer-Generated Imagery
- CGT—Computational Graph Theory
- CHAP—Challenge-Handshake Authentication Protocol
- CHS—Cylinder-Head-Sector
- CIDR—Classless Inter-Domain Routing
- CIFS—Common Internet Filesystem
- CIM—Common Information Model
- CIM—Computationally Independent Model
- CIO—Chief Information Officer
- CIR—Committed information rate
- CISC—Complex Instruction Set Computer
- CJK—Chinese, Japanese, and Korean
- CJKV—Chinese, Japanese, Korean, and Vietnamese
- CLI—Command Line Interface
- CLR—Common Language Runtime
- CM—Configuration Management
- CM—Content Management
- CMDB—Configuration Management Database
- CMMI—Capability Maturity Model Integration
- CMOS—Complementary Metal-Oxide Semiconductor
- CMO—Current Mode of Operation
- CMS—Content Management System
- CN—Canonical Name
- CN—Common Name
- CNC—Computer Numerical Control
- CNG—Cryptographic Next Generation
- CNG—Cryptography Next Generation
- CNR—Communications and Networking Riser
- COBOL—Common Business-Oriented Language
- COM—Component Object Model or communication
- CORBA—Common Object Request Broker Architecture
- CORS—Cross-Origin Resource Sharing
- COTS—Commercial Off-The-Shelf
- CPA—Cell Processor Architecture
- CPAN—Comprehensive Perl Archive Network
- CP/M—Control Program/Monitor
- CPRI—Common Public Radio Interface
- CPS—characters per second
- CPU—Central Processing Unit
- CQS—Command–query separation
- CQRS—Command Query Responsibility Segregation
- CR—Carriage Return
- CRAN—Comprehensive R Archive Network
- CRC—Cyclic Redundancy Check
- CRLF—Carriage Return Line Feeds
- CRM—Customer Relationship Management
- CRS—Computer Reservations System
- CRT—Cathode-Ray Tube
- CRUD—Create, Read, Update and Delete
- CS—Cable Select
- CS—Computer Science
- CSE—Computer Science and Engineering
- CSI—Common System Interface
- CSM—Compatibility Support Module
- CSMA/CD—Carrier-sense multiple access with collision detection
- CSP—Cloud Service Provider
- CSP—Communicating Sequential Processes
- CSRF—Cross-Site Request Forgery
- CSS—Cascading Style Sheets
- CSS—Content-Scrambling System
- CSS—Closed Source Software
- CSS—Cross-Site Scripting
- CSV—Comma-Separated Values
- CT—Computerized Tomography
- CTAN—Comprehensive TeX Archive Network
- CTCP—Client-To-Client Protocol
- CTI—Computer Telephony Integration
- CTFE—Compile-time function execution
- CTL—Computational Tree Logic
- CTM—Close To Metal
- CTS—Clear To Send
- CTSS—Compatible Time-Sharing System
- CUA—Common User Access
- CVE—Common Vulnerabilities and Exposures
- CVS—Concurrent Versioning System
- CX—Customer Experience
D
- DAC—Digital-To-Analog Converter
- DAC—Discretionary Access Control
- DAL—Database Abstraction Layer
- DAO—Data Access Object
- DAO—Data Access Objects
- DAO—Disk-At-Once
- DAP—Directory Access Protocol
- DARPA—Defense Advanced Research Projects Agency
- DAS—Direct Attached Storage
- DAT—Digital Audio Tape
- DB—Database
- DSKT—Desktop
- DBA—Database Administrator
- DBCS—Double Byte Character Set
- DBMS—Database Management System
- DCC—Direct Client-to-Client
- DCCP—Datagram Congestion Control Protocol
- DCCA—Debian Common Core Alliance
- DCL—Data Control Language
- DCS—Distributed Control System
- DCMI—Dublin Core Metadata Initiative
- DCOM—Distributed Component Object Model
- DD—Double Density
- DDE—Dynamic Data Exchange
- DDI—DNS DHCP & IP address management
- DDL—Data Definition Language
- DDoS—Distributed Denial of Service
- DDR—Double Data Rate
- DEC—Digital Equipment Corporation
- DES—Data Encryption Standard
- dev—development
- DFA—Deterministic Finite Automaton
- DFD—Data Flow Diagram
- DFS—Depth-First Search
- DFS—Distributed File System
- DGD—Dworkin's Game Driver
- DHCP—Dynamic Host Configuration Protocol
- DHTML—Dynamic Hypertext Markup Language
- DIF—Data Integrity Field
- DIMM—Dual Inline Memory Module
- DIN—Deutsches Institut für Normung
- DIP—Dual In-line Package
- DISM—Deployment Image and Service Management Tool
- DIVX—Digital Video Express
- DKIM—Domain Keys Identified Mail
- DL—Download
- DLL—Dynamic Link Library
- DLNA—Digital Living Network Alliance
- DMA—Direct Memory Access
- DMCA—Digital Millennium Copyright Act
- DMI—Direct Media Interface
- DML—Data Manipulation Language
- DML—Definitive Media Library
- DMR—Dennis M. Ritchie
- DMZ—Demilitarized Zone
- DN—Distinguished Name
- DND—Drag-and-Drop
- DNS—Domain Name System
- DOA—Dead on Arrival
- DOCSIS—Data Over Cable Service Interface Specification
- DOM—Document Object Model
- DORA—Discover, Offer, Request, Acknowledge
- DoS—Denial of Service
- DOS—Disk Operating System
- DP—Dot Pitch
- DPC—Deferred Procedure Call
- DPI—Deep Packet Inspection
- DPI—Dots Per Inch
- DPMI—DOS Protected Mode Interface
- DPMS—Display Power Management Signaling
- DR—Disaster Recovery
- DRAM—Dynamic Random-Access Memory
- DR-DOS—Digital Research – Disk Operating System
- DRI—Direct Rendering Infrastructure
- DRM—Digital Rights Management
- DRM—Direct Rendering Manager
- DSA—Digital Signature Algorithm
- DSDL—Document Schema Definition Languages
- DSDM—Dynamic Systems Development Method
- DSL—Digital Subscriber Line
- DSL—Domain-Specific Language
- DSLAM—Digital Subscriber Line Access Multiplexer
- DSN—Database Source Name
- DSN—Data Set Name
- DSP—Digital Signal Processor
- DSSSL—Document Style Semantics and Specification Language
- DTD—Document Type Definition
- DTE—Data Terminal Equipment or data transfer rate
- DTO—Data Transfer Object
- DTP—Desktop Publishing
- DTR—Data Terminal Ready or Data transfer rate
- DVD—Digital Versatile Disc or Digital Video Disc
- DVD-R—DVD-Recordable
- DVD-ROM—DVD-Read-Only Memory
- DVD-RW—DVD-Rewritable
- DVI—Digital Visual Interface
- DVR—Digital Video Recorder
- DW—Data Warehouse
E
- EAI—Enterprise Application Integration
- EAP—Extensible Authentication Protocol
- EAS—Exchange ActiveSync
- EBCDIC—Extended Binary Coded Decimal Interchange Code
- EBML—Extensible Binary Meta Language
- ECC—Elliptic Curve Cryptography
- ECMA—European Computer Manufacturers Association
- ECN—Explicit Congestion Notification
- ECOS—Embedded Configurable Operating System
- ECRS—Expense and Cost Recovery System
- ECS—Entity-Component-System
- EDA—Electronic Design Automation
- EDGE—Enhanced Data rates for GSM Evolution
- EDI—Electronic Data Interchange
- EDO—Extended Data Out
- EDSAC—Electronic Delay Storage Automatic Calculator
- EDVAC—Electronic Discrete Variable Automatic Computer
- EEPROM—Electronically Erasable Programmable Read-Only Memory
- EFF—Electronic Frontier Foundation
- EFI—Extensible Firmware Interface
- EFM—Eight-to-Fourteen Modulation
- EFM—Ethernet in the First Mile
- EFS—Encrypting File System
- EGA—Enhanced Graphics Array
- E-mail—Electronic mail
- EGP—Exterior Gateway Protocol
- eID—electronic ID card
- EIDE—Enhanced IDE
- EIGRP—Enhanced Interior Gateway Routing Protocol
- EISA—Extended Industry Standard Architecture
- ELF—Extremely Low Frequency
- ELF—Executable and Linkable Format
- ELM—ELectronic Mail
- EMACS—Editor MACroS
- EMS—Expanded Memory Specification
- ENIAC—Electronic Numerical Integrator And Computer
- EOD—End of Day
- EOF—End of File
- EOL—End of Life
- EOL—End of Line
- EOM—End of Message
- EOS—End of Support
- EPIC—Explicitly Parallel Instruction Computing
- EPROM—Erasable Programmable Read-Only Memory
- ERD—Entity–Relationship Diagram
- ERM—Entity–Relationship Model
- ERP—Enterprise Resource Planning
- eSATA—external SATA
- ESB—Enterprise service bus
- ESCON—Enterprise Systems Connection
- ESD—Electrostatic Discharge
- ESI—Electronically Stored Information
- ESR—Eric Steven Raymond
- ETL—Extract, Transform, Load
- ETW—Event Tracing for Windows
- EUC—Extended Unix Code
- EULA—End User License Agreement
- EWM—Enterprise Work Management
- EWMH—Extended Window Manager Hints
- EXT—EXTended file system
- ETA—Estimated Time of Arrival
F
- FAP—FORTRAN Assembly Program
- FASM—Flat ASseMbler
- FAT—File Allocation Table
- FAQ—Frequently Asked Questions
- FBDIMM—Fully Buffered Dual Inline Memory Module
- FC-AL—Fibre Channel Arbitrated Loop
- FCB—File Control Block
- FCS—Frame Check Sequence
- FDC—Floppy-Disk Controller
- FDS—Fedora Directory Server
- FDD—Frequency-Division Duplexing
- FDD—Floppy Disk Drive
- FDDI—Fiber Distributed Data Interface
- FDM—Frequency-Division Multiplexing
- FDMA—Frequency-Division Multiple Access
- FE—Frontend
- FEC—Forward Error Correction
- FEMB—Front-End Motherboard
- FET—Field Effect Transistor
- FHS—Filesystem Hierarchy Standard
- FICON—FIber CONnectivity
- FIFO—First In First Out
- FIPS—Federal Information Processing Standards
- FL—Function Level
- FLAC—Free Lossless Audio Codec
- FLOPS—FLoating-Point Operations Per Second
- FLOSS—Free/Libre/Open-Source Software
- FMC—Fixed Mobile Convergence "Mobile UC or Unified Communications over Wireless"
- FMO—Future Mode of Operation
- FOLDOC—Free On-line Dictionary of Computing
- FORTRAN—Formula Translation
- FOSDEM—Free and Open-source Software Developers' European Meeting
- FOSI—Formatted Output Specification Instance
- FOSS—Free and Open-Source Software
- FP—Function Programming
- FP—Functional Programming
- FPGA—Field Programmable Gate Array
- FPS—Floating Point Systems
- FPU—Floating-Point Unit
- FRU—Field-Replaceable Unit
- FS—File System
- FSB—Front-Side Bus
- fsck—File System Check
- FSF—Free Software Foundation
- FSM—Finite State Machine
- FTTA—Fiber To The Antenna
- FTTC—Fiber To The Curb
- FTTH—Fiber To The Home
- FTTP—Fiber To The Premises
- FTP—File Transfer Protocol
- FQDN—Fully Qualified Domain Name
- FUD—Fear Uncertainty Doubt
- FWS—Folding White Space
- FXP—File eXchange Protocol
- FYI—For Your Information
- FVEK—Full Volume Encryption Key
G
- G11N—Globalization
- Gas—GNU Assembler
- Gb—Gigabit
- GB—Gigabyte
- Gbps—Gigabits per second
- GCC—GNU Compiler Collection
- GCJ—GNU Compiler for Java
- GCP—Google Cloud Platform
- GCR—Group Coded Recording
- GDB—GNU Debugger
- GDI—Graphics Device Interface
- GFDL—GNU Free Documentation License
- GIF—Graphics Interchange Format
- GIGO—Garbage In, Garbage Out
- GIMP—GNU Image Manipulation Program
- GIMPS—Great Internet Mersenne Prime Search
- GIS—Geographic Information System
- GLUT—OpenGL Utility Toolkit
- GML—Geography Markup Language
- GNOME—GNU Network Object Model Environment
- GNU—GNU's Not Unix
- GOMS—Goals, Operators, Methods, and Selection rules
- GPASM—GNU PIC ASseMbler
- GPFS—General Parallel File System
- GPG—GNU Privacy Guard
- GPGPU—General-Purpose Computing on Graphics Processing Units
- GPIB—General-Purpose Instrumentation Bus
- GPL—General Public License
- GPL—General-Purpose Language
- GPRS—General Packet Radio Service
- GPT—GUID Partition Table
- GPU—Graphics Processing Unit
- GRUB—Grand Unified Boot-Loader
- GERAN—GSM EDGE Radio Access Network
- GSM—Global System for Mobile Communications
- GTK/GTK+—GIMP Toolkit[1]
- GUI—Graphical User Interface
- GUID—Globally Unique IDentifier
- GWT—Google Web Toolkit
- GYR—IT Networking
H
- HA—High availability
- HAL—Hardware Abstraction Layer
- HARD—HTML Application Rapid Development
- HASP—Houston Automatic Spooling Priority
- HBA—Host Bus Adapter
- HCI—Human—Computer Interaction
- HD—High Density
- HDD—Hard Disk Drive
- HCL—Hardware Compatibility List
- HD DVD—High Definition DVD
- HDL—Hardware Description Language
- HDMI—High-Definition Multimedia Interface
- HECI—Host Embedded Controller Interface
- HF—High Frequency
- HFS—Hierarchical File System
- HHD—Hybrid Hard Drive
- HID—Human Interface Device
- HIG—Human Interface Guidelines
- HIRD—Hurd of Interfaces Representing Depth
- HLASM—High Level ASseMbler
- HLS—HTTP Live Streaming
- HMA—High Memory Area
- HP—Hewlett-Packard
- HPC—High-Performance Computing
- HPFS—High Performance File System
- HSDPA—High-Speed Downlink Packet Access
- HTC—High-Throughput Computing
- HSM—Hierarchical Storage Management
- HT—Hyper Threading
- HTM—Hierarchical Temporal Memory
- HTML—Hypertext Markup Language
- HTTP—Hypertext Transfer Protocol
- HTTPd—Hypertext Transport Protocol Daemon
- HTTPS—HTTP Secure
- HTX—HyperTransport eXpansion
- HURD—Hird of Unix-Replacing Daemons
- HVD—Holographic Versatile Disc
- Hz—Hertz
I
- I²C—Inter-Integrated Circuit
- I²S—Integrated Interchip Sound
- I18N—Internationalization
- IANA—Internet Assigned Numbers Authority
- IaaS—Infrastructure as a Service
- IaC—Infrastructure as Code
- iBCS—Intel Binary Compatibility Standard
- IBM—International Business Machines
- IC—Integrated Circuit
- ICANN—Internet Corporation for Assigned Names and Numbers
- ICE—In-Circuit Emulator
- ICE—Intrusion Countermeasure Electronics
- ICH—I/O Controller Hub
- ICMP—Internet Control Message Protocol
- ICP—Internet Cache Protocol
- ICS—Internet Connection Sharing
- ICT—Information and Communication Technology
- IDE—Integrated Development Environment
- IDE—Integrated Drive Electronics
- IDF—Intermediate Distribution Frame
- IDF—Intermediate Data Format
- IDL—Interactive Data Language
- IDL—Interface Definition Language
- IdP—Identity Provider (cybersecurity)
- IDS—Intrusion Detection System
- IE—Internet Explorer
- IEC—International Electrotechnical Commission
- IEEE—Institute of Electrical and Electronics Engineers
- IETF—Internet Engineering Task Force
- IFL—Integrated Facility for Linux
- IGMP—Internet Group Management Protocol
- IGRP—Interior Gateway Routing Protocol
- IHV—Independent Hardware Vendor
- IIOP—Internet Inter-Orb Protocol
- IIS—Internet Information Services
- IKE—Internet Key Exchange
- IL—Intermediate Language
- IM—Instant Message or Instant Messaging
- IMAP—Internet Message Access Protocol
- IME—Input Method Editor
- INFOSEC—Information Systems Security
- I/O—Input/output
- IoT—Internet of Things
- IP—Intellectual Property
- IP—Internet Protocol
- IPAM—IP Address Management
- IPC—Inter-Process Communication
- IPL—Initial Program Load
- IPMI—Intelligent Platform Management Interface
- IPO—Inter Procedural Optimization
- IPP—Internet Printing Protocol
- IPS—In-Plane Switching
- IPS—Instructions Per Second
- IPS—Intrusion Prevention System
- IPsec—Internet Protocol security
- IPTV—Internet Protocol Television
- IPv4—Internet Protocol version 4
- IPv6—Internet Protocol version 6
- IPX—Internetwork Packet Exchange
- IR—Intermediate Representation
- IRC—Internet Relay Chat
- IrDA—Infrared Data Association
- IRI—Internationalized Resource Identifier
- IRP—I/O Request Packet
- IRQ—Interrupt Request
- IS—Information Systems
- IS-IS—Intermediate System to Intermediate System
- ISA—Industry Standard Architecture
- ISA—Instruction Set Architecture
- ISAM—Indexed Sequential Access Method
- ISATAP—Intra-Site Automatic Tunnel Addressing Protocol
- ISC—Internet Storm Center
- iSCSI—Internet Small Computer System Interface
- ISDN—Integrated Services Digital Network
- ISO—International Organization for Standardization
- iSNS—Internet Storage Name Service
- ISP—Internet Service Provider
- ISPF—Interactive System Productivity Facility
- ISR—Interrupt Service Routine
- ISV—Independent Software Vendor
- IT—Information Technology
- ITIL—Information Technology Infrastructure Library
- ITL—Interval Temporal Logic
- ITU—International Telecommunication Union
- IVR(S)—Interactive Voice Response (System)
J
- J2EE—Java 2 Enterprise Edition
- J2ME—Java 2 Micro Edition
- J2SE—Java 2 Standard Edition
- JAXB—Java Architecture for XML Binding
- JAX-RPC—Jakarta XML (formerly Java XML) for Remote Procedure Calls
- JAXP—Java API for XML Processing
- JBOD—Just a Bunch of Disks
- JCE— Java Cryptography Extension
- JCL—Job Control Language
- JCP—Java Community Process
- JDBC—Java Database Connectivity
- JDK—Java Development Kit
- JEE—Java Enterprise Edition
- JES—Job Entry Subsystem
- JDS—Java Desktop System
- JFC—Java Foundation Classes
- JFET—Junction Field-Effect Transistor
- JFS—IBM Journaling File System
- JINI—Jini Is Not Initials
- JIT—Just-In-Time
- JME—Java Micro Edition
- JMX—Java Management Extensions
- JMS—Java Message Service
- JNDI—Java Naming and Directory Interface
- JNI—Java Native Interface
- JNZ—Jump non-zero
- JPEG—Joint Photographic Experts Group
- JRE—Java Runtime Environment
- JS—JavaScript
- JSE—Java Standard Edition
- JSON—JavaScript Object Notation
- JSP—Jackson Structured Programming
- JSP—JavaServer Pages
- JTAG—Joint Test Action Group
- JVM—Java Virtual Machine
K
L
- L10N—Localization
- L2TP—Layer two Tunneling Protocol
- LACP—Link Aggregation Control Protocol
- LAMP—Linux Apache MySQL Perl
- LAMP—Linux Apache MySQL PHP
- LAMP—Linux Apache MySQL Python
- LAN—Local Area Network
- LBA—Logical Block Addressing
- LB—Load Balancer
- LCD—Liquid Crystal Display
- LCR—Least Cost Routing
- LCOS—Liquid Crystal On Silicon
- LDAP—Lightweight Directory Access Protocol
- LE—Logical Extents
- LED—Light-Emitting Diode
- LF—Line Feed
- LF—Low Frequency
- LFS—Linux From Scratch
- LGA—Land Grid Array
- LGPL—Lesser General Public License
- LIB—LIBrary
- LIF—Low Insertion Force
- LIFO—Last In First Out
- LILO—Linux Loader
- LIP—Loop Initialization Primitive
- LISP—LISt Processing
- LKML—Linux Kernel Mailing List
- LM—Lan Manager
- LOC—Lines of Code
- LPC—Lars Pensjö C
- LPI—Lines Per Inch
- LPI—Linux Professional Institute
- LPT— Line Print Terminal
- LRU—Least Recently Used
- LSB—Least Significant Bit
- LSB—Linux Standard Base
- LSI—Large-Scale Integration
- LTE—Long Term Evolution
- LTL—Linear Temporal Logic
- LTR—Left-to-Right
- LUG—Linux User Group
- LUN—Logical Unit Number
- LV—Logical Volume
- LVD—Low Voltage Differential
- LVM—Logical Volume Management
- LZW—Lempel-Ziv-Welch
M
- MAC—Mandatory Access Control
- MAC—Media Access Control
- MAC—Message authentication code
- MANET—Mobile Ad-Hoc Network
- MAN—Metropolitan Area Network
- MAPI—Messaging Application Programming Interface
- MBCS—Multi Byte Character Set
- MBD—Model-Based Design
- MBR—Master Boot Record
- Mb—Megabit
- MB—Megabyte
- Mbps—Megabits per second
- broken anchor]—Microsoft Certified Application Developer
- broken anchor]—Microsoft Certified Application Specialist
- MCA—Micro Channel Architecture
- MCA—Microsoft Certified Architect
- MCDBA—Microsoft Certified DataBase Administrator
- broken anchor]—Microsoft Certified Desktop Support Technician
- MCITP—Microsoft Certified Information Technology Professional
- MCM—Microsoft Certified Master
- MCPC—Multiple Channels Per Carrier
- MCPD—Microsoft Certified Professional Developer
- MCP—Microsoft Certified Professional
- broken anchor]—Microsoft Certified Systems Administrator
- broken anchor]—Microsoft Certified Solution Developer
- broken anchor]—Microsoft Certified Systems Engineer
- MCTS—Microsoft Certified Technology Specialist
- broken anchor]—Microsoft Certified Trainer
- MDA—Monochrome Display Adapter
- MDA—Mail Delivery Agent
- MDA—Model-Driven Architecture
- MDD/MDSD—Model-Driven (Software) Development
- MDF—Main Distribution Frame
- MDI—Multiple-Document Interface
- MDM—Master Data Management
- ME—Microsoft Edge
- ME—[Windows] Millennium Edition
- MFA—Multi-factor authentication
- MFC—Microsoft Foundation Classes
- MFT—Master File Table
- MFM—Modified Frequency Modulation
- MF—Medium Frequency
- MGCP—Media Gateway Control Protocol
- MHz—Megahertz
- MIB—Management Information Base
- MICR—Magnetic Ink Character Recognition or Magnetic Ink Character Reader
- MIDI—Musical Instrument Digital Interface
- MIMD—Multiple Instruction, Multiple Data
- MIME—Multipurpose Internet Mail Extensions
- MIMO—Multiple-Input Multiple-Output
- MINIX—MIni-uNIX
- MIPS—Microprocessor without Interlocked Pipeline Stages
- MIPS—Million Instructions Per Second
- MISD—Multiple Instruction, Single Data
- MIS—Management Information Systems
- MIT—Massachusetts Institute of Technology
- ML—Machine Learning
- MMC—Microsoft Management Console
- MMDS—Mortality Medical Data System
- MMDS—Multichannel Multipoint Distribution Service
- MMF—Multi-Mode (optical) Fiber
- MMIO—Memory-Mapped I/O
- MMI—Man Machine Interface.
- MMORPG—Massively Multiplayer Online Role-Playing Game
- MMS—Multimedia Message Service
- MMU—Memory Management Unit
- MMX—Multi-Media Extensions
- MNG—Multiple-image Network Graphics
- MoBo—Motherboard
- MOM—Message-Oriented Middleware
- MOO—MUD Object Oriented
- MOP—Meta-Object Protocol
- MOSFET—Metal-Oxide Semiconductor Field Effect Transistor
- broken anchor]—Microsoft Office Specialist
- MOTD—Message Of The Day
- MOUS—Microsoft Office User Specialist
- MOV—Apple QuickTime Multimedia File
- MPAA—Motion Picture Association of America
- MPEG—Motion Pictures Experts Group
- MPLS—Multiprotocol Label Switching
- MPL—Mozilla Public License
- MPU—Microprocessor Unit
- MS-DOS—Microsoft DOS
- MSA—Mail Submission Agent
- MSB—Most Significant Bit
- MSDN—Microsoft Developer Network
- MSI—Medium-Scale Integration
- MSI—Message Signaled Interrupt
- MSI—Microsoft Installer
- MSN—Microsoft Network
- MS—Microsoft
- MS—Memory Stick
- MTA—Mail Transfer Agent
- MTA—Microsoft Technology Associate
- MTBF—Mean Time Between Failures
- MTU—Maximum Transmission Unit
- MT—Machine Translation
- MUA—Mail User Agent
- MUD—Multi-User Dungeon
- MU—Memory Unit
- MVC—Model-View-Controller
- MVP—Most Valuable Professional
- MVS—Multiple Virtual Storage
- MWC—Mobile World Congress
- MXF—Material Exchange Format
- MX—Mail exchange
N
- NAC—Network Access Control
- NACK—Negative ACKnowledgement
- NAK—Negative AcKnowledge Character
- NaN—Not a Number
- NAP—Network Access Protection
- NAS—Network-Attached Storage
- NASM—Netwide ASseMbler
- NAT—Network Address Translation
- NCP—NetWare Core Protocol
- NCQ—Native Command Queuing
- NCSA—National Center for Supercomputing Applications
- NDIS—Network Driver Interface Specification
- NDPS—Novell Distributed Print Services
- NDS—Novell Directory Services
- NEP—Network Equipment Provider
- NetBIOS—Network Basic Input/Output System
- NetBT—NetBIOS over TCP/IP
- NEXT—Near-End CrossTalk
- NFA—Nondeterministic Finite Automaton
- NFC—Near-field communication
- NFS—Network File System
- NFT—Non-Fungible Token
- NGL—aNGeL
- NGSCB—Next-Generation Secure Computing Base
- NI—National Instruments
- NIC—Network Interface Controller or Network Interface Card
- NIM—No Internal Message
- NIO—Non-blocking I/O
- NIST—National Institute of Standards and Technology
- NLE—Non-Linear Editing system
- NLP—Natural Language Processing
- NLS—Native Language Support
- NMI—Non-Maskable Interrupt
- NNTP—Network News Transfer Protocol
- NOC—Network Operations Center
- NOP—No OPeration
- NOS—Network Operating System
- NP—Nondeterministic Polynomial time
- NPL—Netscape Public License
- NPTL—Native POSIX Thread Library
- NPU—Network Processing Unit
- NS—Netscape
- NSA—Network Security Appliance
- NSI—Network Service Interface
- NSIS—Nullsoft Scriptable Install System
- NSPR—Netscape Portable Runtime
- NSS—Novell Storage Service
- NSS—Network Security Services
- NSS—Name Service Switch
- NT—New Technology
- NTFS—NT Filesystem
- NTLM—NT Lan Manager
- NTP—Network Time Protocol
- NUMA—Non-Uniform Memory Access
- NURBS—Non-Uniform Rational B-Spline
- NVR—Network Video Recorder
- NVRAM—Non-Volatile Random-Access Memory
O
- OASIS—Organization for the Advancement of Structured Information Standards
- OAT—Operational Acceptance Testing
- OBSAI—Open Base Station Architecture Initiative
- OCR—Optical Character Recognition
- ODBC—Open Database Connectivity
- OEM—Original Equipment Manufacturer
- OES—Open Enterprise Server
- OFDM—Orthogonal Frequency-Division Multiplexing
- OFTC—Open and Free Technology Community
- OID—Object Identifier
- OLAP—Online Analytical Processing
- OLE—Object Linking and Embedding
- OLED—Organic Light Emitting Diode
- OLPC—One Laptop per Child
- OLTP—Online Transaction Processing
- OMF—Object Module Format
- OMG—Object Management Group
- OMR—Optical Mark Reader
- OO—Object-Oriented
- OO—OpenOffice
- OOE—Out-of-Order Execution
- OOM—Out Of Memory
- OOo—OpenOffice.org
- OoOE—Out-of-Order Execution
- OOP—Object-Oriented Programming
- OOTB—Out of the box
- OPML—Outline Processor Markup Language
- ORB—Object Request Broker
- ORM—Object–Relational Mapping
- OS—Open Source
- OS—Operating System
- OSCON—O'Reilly Open Source CONvention
- OSDN—Open Source Development Network
- OSI—Open Source Initiative
- OSI—Open Systems Interconnection
- OSPF—Open Shortest Path First
- OSS—Open Sound System
- OSS—Open-Source Software
- OSS—Operations Support System
- OSTG—Open Source Technology Group
- OTP—One-time password
- OUI—Organizationally Unique Identifier
P
- P2P—Peer-To-Peer
- PaaS—Platform as a Service
- PAM—Privileged Access Management
- PAN—Personal Area Network
- PAP—Password Authentication Protocol
- PARC—Palo Alto Research Center
- PATA—Parallel ATA
- PBS—Portable Batch System
- PC—Personal Computer
- PCB—Printed Circuit Board
- PCB—Process Control Block
- PC DOS—Personal Computer Disc Operating System
- PCI—Peripheral Component Interconnect
- PCIe—PCI Express
- PCI-X—PCI Extended
- PCL—Printer Command Language
- PCMCIA—Personal Computer Memory Card International Association
- PCM—Pulse-Code Modulation
- PCRE—Perl Compatible Regular Expressions
- PD—Public Domain
- PDA—Personal Digital Assistant
- PDF—Portable Document Format
- PDH—Plesiochronous Digital Hierarchy
- PDP—Programmed Data Processor
- PE—Physical Extents
- PE—Portable Executable
- PERL—Practical Extraction and Reporting Language
- PFA—Please Find Attachment
- PG—Peripheral Gateway
- PGA—Pin Grid Array
- PGA—Programmable Gate Array
- PGO—Profile-Guided Optimization
- PGP—Pretty Good Privacy
- PHP—Hypertext Preprocessor
- PIC—Peripheral Interface Controller
- PIC—Programmable Interrupt Controller
- PID—Proportional-Integral-Derivative
- PID—Process ID
- PIM—Personal Information Manager
- PINE—Program for Internet News and Email
- PIM—Platform Independent Model
- PING—Packet Internet Gopher
- PIO—Programmed Input/Output
- Pixel—Picture element
- PKCS—Public Key Cryptography Standards
- PKI—Public Key Infrastructure
- PLC—Power Line Communication
- PLC—Programmable Logic Controller
- PLD—Programmable Logic Device
- PL/I—Programming Language One
- PL/M—Programming Language for Microcomputers
- PL/P—Programming Language for Prime
- PLT—Power Line Telecommunications
- PMM—POST Memory Manager
- PNG—Portable Network Graphics
- PnP—Plug-and-Play
- PNRP—Peer Name Resolution Protocol
- PoE—Power over Ethernet
- PoS—Point of Sale
- POCO—Plain Old Class Object
- POID—Persistent Object Identifier
- POJO—Plain Old Java Object
- POP—Point of Presence
- POP3—Post Office Protocol v3
- POSIX—Portable Operating System Interface, formerly IEEE-IX
- POST—Power-On Self Test
- PPC—PowerPC
- PPI—Pixels Per Inch
- PPM—Pages Per Minute
- PPP—Point-to-Point Protocol
- PPPoA—PPP over ATM
- PPPoE—PPP over Ethernet
- PPTP—Point-to-Point Tunneling Protocol
- PR—Pull Request
- PROM—Programmable Read-Only Memory
- PS—PostScript
- PS/2—Personal System/2
- PSA—Professional Services Automation
- PSM—Platform Specific Model
- PSTN—Public Switched Telephone Network
- PSU—Power Supply Unit
- PSVI—Post-Schema-Validation Infoset
- PTS-DOS—PhysTechSoft – Disk Operating System
- PV—Physical Volume
- PVG—Physical Volume Group
- PVR—Personal Video Recorder
- PXE—Preboot Execution Environment
- PXI—PCI eXtensions for Instrumentation
- PRC—Procedure Remote Call
Q
R
- RACF—Resource Access Control Facility
- RAD—Rapid Application Development
- RADIUS—Remote Authentication Dial In User Service
- RAID—Redundant Array of Independent Disks
- RAII—Resource Acquisition Is Initialization
- RAIT—Redundant Array of Inexpensive Tapes
- RAM—Random-Access Memory
- RARP—Reverse Address Resolution Protocol
- RAS—Reliability, Availability and Serviceability
- RAS—Remote access service
- RC—Region Code
- RC—Release Candidate
- RC—Run Commands
- RCA—Root Cause Analysis
- RCS—Revision Control System
- RD—Remote Desktop
- rd—remove directory
- RDBMS—Relational Database Management System
- RDC—Remote Desktop Connection
- RDF—Resource Description Framework
- RDM—Relational Data Model
- RDOS—Real-time Disk Operating System
- RDP—Remote Desktop Protocol
- RDS—Remote Data Services
- REFAL—Recursive Functions Algorithmic Language
- REP—RAID Error Propagation
- REST—Representational State Transfer
- RESV—Reservation Message
- regex—Regular Expression
- regexp—Regular Expression
- RF—Radio Frequency
- RFC—Request For Comments
- RFI—Radio Frequency Interference
- RFID—Radio Frequency Identification
- RGB—Red, Green, Blue
- RGBA—Red, Green, Blue, Alpha
- RHL—Red Hat Linux
- RHEL—Red Hat Enterprise Linux
- RIA—Rich Internet Application
- RIAA—Recording Industry Association of America
- RIP—Raster Image Processor
- RIP—Routing Information Protocol
- RIR—Regional Internet registry
- RISC—Reduced Instruction Set Computer
- RISC OS—Reduced Instruction Set Computer Operating System
- RJE—Remote Job Entry
- RLE—Run-Length Encoding
- RLL—Run-Length Limited
- rmdir—remove directory
- RMI—Remote Method Invocation
- RMS—Richard Matthew Stallman
- ROM—Read-Only Memory
- ROMB—Read-Out Motherboard
- ROM-DOS—Read-Only Memory – Disk Operating System
- RPA—Robotic Process Automation
- RPC—Remote Procedure Call
- RPG—Report Program Generator
- RPM—RPM Package Manager
- RRAS—Routing and Remote Access Service
- RSA—Rivest Shamir Adleman
- RSI—Repetitive Strain Injury
- RSS—Radio Service Software
- RSS—Rich Site Summary, RDF Site Summary, or Really Simple Syndication
- RSVP—Resource Reservation Protocol
- RTAI—Real-Time Application Interface
- RTC—Real-Time Clock
- RTE—Real-Time Enterprise
- RTEMS—Real-Time Executive for Multiprocessor Systems
- RTF—Rich Text Format
- RTL—Right-to-Left
- RTMP—Real Time Messaging Protocol
- RTOS—Real-Time Operating System
- RTP—Real-time Transport Protocol
- RTS—Ready To Send
- RTSP—Real Time Streaming Protocol
- RTTI—Run-time Type Information
- RTU—Remote Terminal Unit
- RWD—Responsive Web Design
S
- SaaS—Software as a Service
- SASS—Syntactically Awesome Style Sheets
- SAM—Security Account Manager
- SAN—Storage Area Network
- SAS—Serial attached SCSI
- SATA—Serial ATA
- SAX—Simple API for XML
- SBOD—Spinning Beachball of Death
- SBP-2—Serial Bus Protocol 2
- sbin—superuser binary
- sbs—Small Business Server
- SBU—Standard Build Unit
- SCADA—Supervisory Control And Data Acquisition
- SCID—Source Code in Database
- SCM—Software Configuration Management
- SCM—Source Code Management
- SCP—Secure Copy
- SCPC—Single Channel Per Carrier
- SCPI—Standard Commands for Programmable Instrumentation
- SCSA—Secure Content Storage Association
- SCSI—Small Computer System Interface
- SCTP—Stream Control Transmission Protocol
- SD—Secure Digital
- SDDL—Security Descriptor Definition Language
- SDH—Synchronous Digital Hierarchy
- SDI—Single-Document Interface
- SEC—Single Edge Contact
- SDIO—Secure Digital Input Output
- SDK—Software Development Kit
- SDL—Simple DirectMedia Layer
- SDN—Service Delivery Network
- SDP—Session Description Protocol
- SDR—Software-Defined Radio
- SDRAM—Synchronous Dynamic Random-Access Memory
- SDSL—Symmetric DSL
- SE—Single Ended
- SEI—Software Engineering Institute
- SEO—Search Engine Optimization
- SFTP—Secure FTP
- SFTP—Simple File Transfer Protocol
- SFTP—SSH File Transfer Protocol
- SGI—Silicon Graphics, Incorporated
- SGML—Standard Generalized Markup Language
- SGR—Select Graphic Rendition
- SHA—Secure Hash Algorithm
- SHDSL—Single-pair High-speed Digital Subscriber Line
- SIEM—Security information and event management
- SIGCAT—Special Interest Group on CD-ROM Applications and Technology
- SIGGRAPH—Special Interest Group on Graphics
- SIMD—Single Instruction, Multiple Data
- SIM—Subscriber Identification Module
- SIMM—Single Inline Memory Module
- SIP—Session Initiation Protocol
- SIP—Supplementary Ideographic Plane
- SISD—Single Instruction, Single Data
- SISO—Single-Input and Single-Output
- SLA—Service Level Agreement
- SLED—SUSE Linux Enterprise Desktop
- SLES—SUSE Linux Enterprise Server
- SLI—Scalable Link Interface
- SLIP—Serial Line Internet Protocol
- SLM—Service Level Management
- SLOC—Source Lines of Code
- SME—Subject Matter Expert
- SMF—Single-Mode (optical) Fiber
- SPM—Software project management
- SPMD—Single Program, Multiple Data
- SPOF—Single point of failure
- SMA—SubMiniature version A
- SMB—Server Message Block
- SMBIOS—System Management BIOS
- SMIL—Synchronized Multimedia Integration Language
- S/MIME—Secure/Multipurpose Internet Mail Extensions
- SMP—Supplementary Multilingual Plane
- SMP—Symmetric Multi-Processing
- SMPS—Switch Mode Power Supply
- SMS—Short Message Service
- SMS—System Management Server
- SMT—Simultaneous Multithreading
- SMTP—Simple Mail Transfer Protocol
- SNA—Systems Network Architecture
- SNMP—Simple Network Management Protocol
- SNTP—Simple Network Time Protocol
- SOA—Service-Oriented Architecture
- SOAP—Simple Object Access Protocol
- SOAP—Symbolic Optimal Assembly Program
- SOPA—Stop Online Piracy Act
- SoC—System-on-a-Chip
- SO-DIMM—Small Outline DIMM
- SOE—Standard Operating Environment
- SOHO—Small Office/Home Office
- SOI—Silicon On Insulator
- SOLID—Single-responsibility, Open-closed, Liskov substitution, Interface segregation, Dependency Inversion
- SP—Service Pack
- SPA—Single Page Application
- SPF—Sender Policy Framework
- SPI—Serial Peripheral Interface
- SPI—Stateful Packet Inspection
- SPARC—Scalable Processor Architecture
- SQL—Structured Query Language
- SRAM—Static Random-Access Memory
- SSA—Static Single Assignment
- SSD—Software Specification Document
- SSD—Solid-State Drive
- SSDP—Simple Service Discovery Protocol
- SSE—Streaming SIMD Extensions
- SSH—Secure Shell
- SSI—Server Side Includes
- SSI—Single-System Image
- SSI—Small-Scale Integration
- SSID—Service Set Identifier
- SSL—Secure Socket Layer
- SSO—Single Sign On
- SSP—Supplementary Special-purpose Plane
- SSR—Server Side Rendering
- SSSE—Supplementary Streaming SIMD Extensions
- SSSP—Single Source Shortest Path
- SSTP—Secure Socket Tunneling Protocol
- su—superuser
- SUS—Single UNIX Specification
- SUSE—Software und System-Entwicklung
- SVC—Scalable Video Coding
- SVG—Scalable Vector Graphics
- SVGA—Super Video Graphics Array
- SVD—Structured VLSI Design
- SWF—Shock Wave Flash
- SWT—Standard Widget Toolkit
- Sysop—System operator
T
- TAO—Track-At-Once
- TAPI—Telephony Application Programming Interface
- TASM—Turbo ASseMbler
- TB—TeraByte
- Tcl—Tool Command Language
- TCP—Transmission Control Protocol
- TCP/IP—Transmission Control Protocol/Internet Protocol
- TCU—Telecommunication Control Unit
- TDMA—Time-Division Multiple Access
- TDP—Thermal Design Power
- TFT—Thin-Film Transistor
- TFTP—Trivial File Transfer Protocol
- TI—Texas Instruments
- TIFF—Tagged Image File Format
- TLA—Three-Letter Acronym
- TLD—Top-Level Domain
- TLS—Thread-Local Storage
- TLS—Transport Layer Security
- TLV—Type—length—value
- tmp—temporary
- TNC—Terminal Node Controller
- TNC—Threaded Neill-Concelman connector
- TPF—Transaction Processing Facility
- TPM—Trusted Platform Module
- TROFF—Trace Off
- TRON—Trace On
- TRON—The Real-time Operating system Nucleus
- TRSDOS—Tandy Radio Shack – Disk Operating System
- TSO—Time Sharing Option
- TSP—Traveling Salesman Problem
- TSR—Terminate and Stay Resident
- TTA—True Tap Audio
- TTF—TrueType Font
- TTL—Transistor—Transistor Logic
- TTL—Time To Live
- TTS—Text-to-Speech
- TTY—Teletype
- TUCOWS—The Ultimate Collection of Winsock Software
- TUG—TeX Users Group
- TWAIN—Technology Without An Interesting Name
U
- UAAG—User Agent Accessibility Guidelines
- UAC—User Account Control
- UART—Universal Asynchronous Receiver/Transmitter
- UAT—User Acceptance Testing
- UB—Undefined Behavior
- UCS—Universal Character Set
- UDDI—Universal Description, Discovery, and Integration
- UDMA—Ultra DMA
- UDP—User Datagram Protocol
- UEFI—Unified Extensible Firmware Interface
- UHF—Ultra High Frequency
- UI—User Interface
- UL—Upload
- ULA—Uncommitted Logic Array
- ULSI—Ultra Large Scale Integration
- UMA—Upper Memory Area
- UMB—Upper Memory Block
- UML—Unified Modeling Language
- UML—User-Mode Linux
- UMPC—Ultra-Mobile Personal Computer
- UMTS—Universal Mobile Telecommunications System
- UNC—Universal Naming Convention
- UNIVAC—Universal Automatic Computer (By MKS)
- UPS—Uninterruptible Power Supply or Uninterrupted Power Supply
- URI—Uniform Resource Identifier
- URL—Uniform Resource Locator
- URN—Uniform Resource Name
- USB—Universal Serial Bus
- usr—User System Resources
- USR—U.S. Robotics
- UTC—Coordinated Universal Time
- UTF—Unicode Transformation Format
- UTP—Unshielded Twisted Pair
- UTRAN—Universal Terrestrial Radio Access Network
- UUCP—Unix to Unix Copy
- UUID—Universally Unique Identifier
- UUN—Universal User Name
- UVC—Universal Virtual Computer
- UWP—Universal Windows Platform
- UX—User Experience
V
- var—variable
- VoLTE—Voice Over Long Term Evolution
- VAX—Virtual Address eXtension
- VCPI—Virtual Control Program Interface
- VB—Visual Basic
- VBA—Visual Basic for Applications
- VBS—Visual Basic Script
- VDI—Virtual Desktop Infrastructure
- VDU—Visual Display Unit
- VDM—Virtual DOS machine
- VDSL—Very High Bitrate Digital Subscriber Line
- VESA—Video Electronics Standards Association
- VFAT—Virtual FAT
- VHD—Virtual Hard Disk
- VFS—Virtual File System
- VG—Volume Group
- VGA—Video Graphics Array
- VHF—Very High Frequency
- VIRUS—Vital Information Resource Under Seize
- VLAN—Virtual Local Area Network
- VLSM—Variable Length Subnet Mask
- VLB—Vesa Local Bus
- VLF—Very Low Frequency
- VLIW—Very Long Instruction Word
- VLSI—Very-Large-Scale Integration
- VM—Virtual Machine
- VM—Virtual Memory
- VMM—Virtual Machine Monitor
- VNC—Virtual Network Computing
- VOD—Video On Demand
- VoIP—Voice over Internet Protocol
- VPN—Virtual Private Network
- VPS—Virtual Private Server
- VPU—Visual Processing Unit
- VR—Virtual Reality
- VRML—Virtual Reality Modeling Language
- VSAM—Virtual Storage-Access Method
- VSAT—Very Small Aperture Terminal
- VT—Video Terminal
- VTL—Virtual Tape Library
- VTAM—Virtual Telecommunications Access Method
- VRAM—Video Random-Access Memory
W
- W3C—World Wide Web Consortium
- WWDC—AppleWorld Wide Developer Conference
- WAFS—Wide Area File Services
- WAI—Web Accessibility Initiative
- WAIS—Wide Area Information Server
- WAN—Wide Area Network
- WAP—Wireless Access Point
- WAP—Wireless Application Protocol
- WASM—Watcom ASseMbler
- WBEM—Web-Based Enterprise Management
- WCAG—Web Content Accessibility Guidelines
- WCF—Windows Communication Foundation
- WDM—Wavelength-Division Multiplexing
- WebDAV—WWW Distributed Authoring and Versioning
- WEP—Wired Equivalent Privacy
- WFI—Wait For Interrupt
- Wi-Fi—Wireless Fidelity
- WiMAX—Worldwide Interoperability for Microwave Access
- WinFS—Windows Future Storage
- WinRT—Windows RunTime
- WINS—Windows Internet Name Service
- WLAN—Wireless Local Area Network
- WMA—Windows Media Audio
- WMI—Windows Management Instrumentation
- WMV—Windows Media Video
- WNS—Windows Push Notification Service
- WOL—Wake-on-LAN
- WOR—Wake-on-Ring
- WORA—Write once, run anywhere
- WORE—Write once, run everywhere
- WORM—Write Once Read Many
- WPA—Wi-Fi Protected Access
- WPAD—Web Proxy Autodiscovery Protocol
- WPAN—Wireless Personal Area Network
- WPF—Windows Presentation Foundation
- WS-D—Web Services-Discovery
- WSDL—Web Services Description Language
- WSFL—Web Services Flow Language
- WUSB—Wireless Universal Serial Bus
- WWAN—Wireless Wide Area Network
- WWID—World Wide Identifier
- WWN—World Wide Name
- WWW—World Wide Web
- WYSIWYG—What You See Is What You Get
- WZC—Wireless Zero Configuration
X
- XAG—XML Accessibility Guidelines
- XAML—eXtensible Application Markup Language
- XDM—X Window Display Manager
- XDMCP—X Display Manager Control Protocol
- XCBL—XML Common Business Library
- XHTML—eXtensible Hypertext Markup Language
- XILP—X Interactive ListProc
- XML—eXtensible Markup Language
- XMMS—X Multimedia System
- XMPP—eXtensible Messaging and Presence Protocol
- XMS—Extended Memory Specification
- XNS—Xerox Network Systems
- XP—Cross-Platform
- XP—Extreme Programming
- XPCOM—Cross Platform Component Object Model
- XPI—XPInstall
- XPIDL—Cross-Platform IDL
- XPS—XML Paper Specification
- XSD—XML Schema Definition
- XSL—eXtensible Stylesheet Language
- XSL-FO—eXtensible Stylesheet Language Formatting Objects
- XSLT—eXtensible Stylesheet Language Transformations
- XSS—Cross-Site Scripting
- XTF—eXtensible Tag Framework
- XTF—eXtended Triton Format
- XUL—XML User Interface Language
- XVGA—Extended Video Graphics Adapter
Y
Z
See also
- Acronym
- Internet slang
- List of file formats
- List of information technology initialisms
- Professional certification
References
- ^ "LinuxWorld - Where did Spencer Kimball and Peter Mattis go?". Archived from the original on 17 April 1999. Retrieved 2013-08-19.
- "Computing Acronyms and Abbreviations". All Acronyms. Retrieved 2008-07-12.