O-LTM: Optical Line Terminating Multiplexer
O-ROM: Optical Read Only Memory
O-WORM: Optical Write Once Read Many
O/R: Originator/Recipient
OA: Office Automation
OAB: Offline Address Book (מיקרוסופט)
OAB: One-to-All Broadcast
OAD: Open Architecture Driver
OAG: Official Airline Guide
OAG: Online Air Guide
OAI: Open Applications Interface
OAM: Operations And Maintenance
OARNet: Ohio Academic Resources NETwork
OAS: One-to-All Scatter
OAS: Oracle Application Server (תוכנה) (אורקל)
OASIS: Open Access Same-time Information System
OASIS: Organization for the Advancement of Structural Information Standards
OASLM: Optically Addressed Spatial Light Modulator (חומרה)
OASYS: Office Automation SYStem
OAW: Optically Assisted Winchester (חומרה)
OBD: On Board Diagnostics
OBD: Online Bugs Database
OBEX: OBject EXchange (Inprise)
OBI: Open Buying on the Internet (ארגונים)
OBJ: OBJect (סיומת קובץ)
OBV: Object By Value (תוכנה)
OBVI: Object-Based Video Interface
OBZ: One Big Zip (הודעות)
OC: Optical Carrier
OC-3: Optical Carrier level 3
OCD: Out-of-Cell Delineation
OCE: Open Collaborative Environment (אפל)
OCF: Object Component Framework (תוכנה) (Inprise)
OCF: OpenCard Framework
OCI: Oracle Call Interface (מסדי נתונים) (אורקל)
OCL: Operator Control Language
OCL: Os/2 Class Library
OCLC: Online Computer Library Center
OCR: Optical Character Recognition
OCS: Object Compatibility Standard
OCS: On-Card Sequencer
OCSP: Online Certificate Status Protocol
OCX: Ole Control eXtension (תוכנה) (מיקרוסופט)
OD: Optical Disk
ODA: Open Document Architecture
ODAPI: Open DataBase Application Programming Interface (תוכנה)
ODBC: Open DataBase Connectivity (מיקרוסופט)
ODBMS: Object DataBase Management System (מסדי נתונים)
ODE: Object Database and Environment
ODE: Office 97 Developer Edition (תוכנה) (מיקרוסופט)
ODI: Open Data-link Interface (רשתות)
ODI: Open Device Interconnect (Novell)
ODIF: Open Document Interchange Format
ODISS: Optical Digital Image Storage System
ODL: Object Definition Language
ODM: Object Data Manager (י.ב.מ)
ODM: Optimized Distribution Model (Compaq)
ODM: Original Design Manufacturing
ODMA: Open Document Management Api (ארגונים)
ODMG: Object Database Management Group
ODP: On-Demand Producer
ODP: Open Distributed Processing
ODP: OverDrive Processor
ODQL: Object Database Query Language (מסדי נתונים)
ODR: Optimized Dynamic Routing
ODS: Open Data Services (מיקרוסופט)
ODS: Operational Data Store
ODS: Overhead Data Stream
ODSI: Open Directory Services Interface
ODT: Open DeskTop
OE: Operating Environment
OE: Outlook Express (תוכנה) (מיקרוסופט)
OE: Output Enable (חומרה)
OECD: Organization for Economic Cooperation and Development (ארגונים)
OEM: Original Equipment Manufacturer
OEP: Operand Execution Pipeline
OF: Overflow Flag
OFA: Optimal Flexible Architecture
OFB: Output FeedBack
OFC: Open Financial Connectivity
OFDM: Orthogonal Frequency Division Multiplexing
OFMT: Output ForMaT
OFP: Organizational Fitness Profiling
OFS: Object File System (מערכות הפעלה)
OFS: Output Field Separator
OFX: Open Financial eXchange
OGC: Open GIS Consortium (GIS)
OGSS: Ordered Grid Super Sampling
OHCI: Open Host Controller Interface
OIA: Operator Information Area
OIC: Oh, I See (הודעות)
OID: Object IDentifier
OIDL: Object Interface Definition Language
OIL: Operator Identification Language
OIM: Open Information Model
OIS: Office Information System
OIW: Osi Implementors Workshop
OJI: Open Jvm Integration
OKC: Online Knowledge Community
OLAP: On-Line Analytical Processing
OLCP: On-Line Complex Processing
OLE: Object Linking and Embedding (תוכנה) (מיקרוסופט)
OLE-DB: Object Linking and Embedding-DataBase
OLED: Organic Light Emitting Diode (חומרה)
OLGA: OnLine Guitar Archive
OLI: Optical Line Interface (AT&T)
OLIT: Open Look Intrinsics Toolkit
OLMC: Open Look Intrinsic Toolkit
OLSP: On-Line Service Provider
OLTP: OnLine Transaction Processing
OM: Object Manager
OM: Object Model (תוכנה)
OMA: Object Management Architecture (מיקרוסופט)
OMAP: Open Multimedia Applications Platform
OME: Open Messaging Environment
OMF: Object Management Framework
OMF: Object Module Format (מיקרוסופט)
OMF: Open Media Framework
OMF: Open Message Format
OMFI: Open Media Framework Interchange
OMG: Object Management Group (ארגונים)
OMI: Open Messaging Interface
OMI: Open Microprocessor Initiative
OMI-STN: Optical Mode Interface-SuperTwisted Nematic
OML: Object Manipulation Language (תוכנה)
OMR: Optical Mark Recognition
OMS: Object Management System
OMT: Object Modeling Technique (תוכנה)
ON: Online Network
ONA: Open Network Architecture
ONAC: Operations Network Administration Center
ONAL: Off Network Access Line
ONC: Open Network Computing (רשתות) (Sun)
ONDS: Open Network Distribution Services (י.ב.מ)
ONE: Open Network Environment (Sun)
ONI: Operator Number Identification
ONMS: Open Network Management System
ONS: Open Networking System
ONU: Optical Network Unit
OO: Object Oriented
OOA: Object-Oriented Analysis
OOAD: Object-Oriented Analysis and Design
OOB: Out Of Band (תקשורת)
OOBE: Object-Oriented Business Engineering
OOBE: Out-Of-Box Experience
OOCASE: Object Oriented Computer Aided Software Engineering
OOCTG: Object-Oriented Cobol Task Group
OOD: Object-Oriented Design
OODB: Object-Oriented DataBase
OODBMS: Object-Oriented DataBase Management System
OODL: Object-Oriented Dynamic Language
OODS: Object-Oriented Data Source
OOFS: Object-Oriented File System (מערכות הפעלה)
OOL: Object-Oriented Language
OOOE: Out Of Order Execution
OOOS: Object-Oriented Operating System
OOP: Object-Oriented Programming (תוכנה)
OOPL: Object-Oriented Programming Language (תוכנה)
OOPS: Object-Oriented Programming System
OOPSLA: Object-Oriented Programming Systems and Language Architecture
OOPSTAD: Object-Oriented Programming for SmallTalk Application Development association
OOS: Object-Oriented Systems
OOS: Off-line Operating Simulator
OOS: Out Of Service
OOSA: Object-Oriented System Analysis
OOSH: Object-Oriented SHell
OOT: Object-Oriented Technology
OOUI: Object-Oriented User Interface
OP: OPeration
OPA: Open Publishing Architecture
OPAC: On-line Public Access Catalog
OPC: Ole for Process Control
OPC: Optical PhotoConductor
OPC: Organic Photoconducting Cartridge (חומרה)
OPCODE: OPerational CODE
OPD: OPeranD
OPI: Open Press Interface (תוכנה)
OPL: Opaque Device Library
OPM: Operations Per Minute
OPOS: Ole for Point Of Sale
OPP: Order Processing Pipeline (רשתות) (מיקרוסופט)
OPROM: Optical Programmable Read Only Memory (חומרה)
OPS: Open Profiling Standard (Netscape)
ops: Operations Per Second
OPS: Oracle Parallel Server (אורקל)
OPT: Open Protocol Technology
OPT: OPTions (סיומת קובץ)
OPUS: Octal Program Updating System
OQL: Object Query Language
OQS: Object Query Service (תוכנה)
OR: OverRun (חומרה)
ORB: Object Request Broker
ORBS: Open Relay Behaviour-modification System
ORDBMS: Object Relational DataBase Management System (מסדי נתונים)
ORDVAC: ORDnance Variable Automatic Computer
ORI: Online Retrieval Interface
ORK: Office Resource Kit (תוכנה) (מיקרוסופט)
ORM: Optical Remote Module
ORMS: Operating Resource Management System (תוכנה)
OROM: Optical Read Only Memory (חומרה)
ORPC: Object Remote Procedure Call (תוכנה)
ORS: Output Record Separator
ORSS: Optical Recognition System Simulator
OS: Operating System
OS-9: Operating System-9
OS/2: Operating System 2 (מערכות הפעלה) (י.ב.מ)
OS/360: Operating System/360
OS/400: Operating System/400
OS/E: Operating System/Environment
OSA: Open Scripting Architecture
OSA: Open System Architecture
OSCE: OfficeScan Corporate Edition
OSCML: OSChooser Markup Language (מערכות הפעלה) (מיקרוסופט)
OSCRL: Operating System Command Response Language
OSD: On-Screen Display (חומרה)
OSD: Open Software Description
OSD: Open Software Distribution
OSDN: Open Source Development Network (תוכנה)
OSDS: Operating System for Distributed Switching
OSE: Office Server Extension (תוכנה) (מיקרוסופט)
OSE: Open Systems Environment
OSF: Open Software Foundation (ארגונים)
OSF: Operation System Function
OSHA: Occupational Safety and Health Administration (ארגונים)
OSI: Open Systems Interconnection
OSI/RM: Open Systems Interconnection/Reference Model
OSIG: Online Special Interest Group
OSM: On-Screen Manager (חומרה) (NEC)
OSM: On-Screen Menu
OSM: Operating system-Specific Module
OSM: Optical Storage Manager
OSME: Open Systems Message Exchange
OSN: Office System Node
OSN: Open Service Node (תקשורת)
OSN: Open Systems Network
OSP: Ole db Simple Provider (מסדי נתונים) (מיקרוסופט)
OSP: On-Screen Programming
OSP: Operations Service Provider
OSP: Optical Signal Processing (חומרה)
OSP: Optical Storage Processor
OSPF: Open Shortest Path First
OSQL: Object Structured Query Language
OSR: Oem Service Release
OSS: Open Source Software (תוכנה)
OSS: Operating System-Specific
OST: Offline STorage
OSTA: Optical Storage Technology Association (ארגונים)
OSW/L2: Operating System-9 Windows/Level 2
OT: Object Technology
OTA: Office of Technology Assessment
OTA: Operation-Triggered Architecture
OTDR: Optical Time Domain Reflectometer
OTF: Open Token Foundation
OTN: Oracle Technology Network (אורקל)
OTOH: On The Other Hand (הודעות)
OTP: One-Time Password
OTP: One-Time Programmable
OTPROM: One-Time Programmable Read Only Memory
OTS: Object Transaction Service
OU: Organizational Unit
OUCL: Oxford University Computing Laboratory
OUG: Occam User Group
OUI: Organizationally Unique Identifier
OURS: Open User Recommended Solutions group
OUTS: OUTput String
OV: OVerflow
OVAL: Object-based Virtual Application Language
OVL: OVerLay (סיומת קובץ)
OVR: OVeRlay (סיומת קובץ)
OWA: Outlook Web Access (רשתות) (מיקרוסופט)
OWG: Optical WaveGuide
OWL: Object Windows Library (תוכנה) (Inprise)
