O-band
O-R mapping
O-RAN
O-RAN Alliance
O2O
O365
OA
OAA
OADG
OAI
OAM
OAM multiplexing
OAM&P
OASIS
OATH
OAuth
OAW
OBD
OBD II
OBD III
OBD port
obfuscate
obfuscated
obfuscator
OBJ file
object
object-based
object-based audio
object-based music
object-based surround sound
object browser
object bus
object code
object computer
Object Data Management Group
object data model
object database
Object Database Management Group
object DBMS
object language
Object Linking and Embedding
Object Management Architecture
Object Management Group
object model
object module
object orientated
object oriented
object-oriented analysis
object-oriented database
object-oriented DBMS
object-oriented design
object-oriented graphics
object-oriented interface
object-oriented operating system
object-oriented programming
object-oriented technology
Object Packager
object program
object references
object-relational database
object-relational DBMS
object-relational mapping
Object Request Broker
object signing
object storage
object technology
object technology references
ObjectARX
Objective-C
ObjectPro
objects
ObjectStore
ObjectStudio
ObjectView
ObjectVision
ObjectWindows
ObjectWorks
obnoxiousware
obscenity filter
observability
Obsydian
OC
OC-1
OC-12
OC-192
OC-3
OC-48
OC://WebConnect
OCaml
OCC
occam
Occulus
OCE
ocean datacenter
Oceanhero
oCERT
OCF
OCI
Ockamy
OCO
OCR
OCR font
OCS
octa-core
octal
octal value
octet
octet stream
octopus cable
OCU
Oculus
Oculus Go
Oculus Rift
Oculus Rift S
Oculus Rooms
Oculus Venues
Oculus VR
OCX
ODAPI
ODBC
ODBCDirect
ODBM
ODBMS
ODD
odd parity
ODF
ODFM
ODI
Odin
ODM
ODMA
ODMG
ODP
ODS
ODSI
ODSL
ODT
ODVA
Odyssey video game
Oe
OEB
OEBPS
OEL
OEM
OEM font
OEM Service Release 2
OEMI
OEO
Oersted
OFDM
OFDMA
off-chain
off-chain governance
off-grid datacenter
off-hook
off-net
off-premise extension
off-ramp
off site
off-site backup
off-site data protection
off-site storage
off-the-shelf
offboard
offboarding
offensive counter-cyber
offensive cyberspace operations
Office
Office 10
Office 11
Office 12
Office 13
Office 14
Office 15
Office 16
Office 17
Office 2000
Office 2003
Office 2007
Office 2010
Office 2013
Office 2016
Office 2019
Office 365
Office 365 Business
Office 365 Business Essentials
Office 365 Business Premium
Office 7
Office 8
Office 9
office application
office application suite
Office assistant
office automation
Office document
Office file formats
Office Live
Office Live Workspace
Office Online
Office Open XML
office productivity software
Office Ribbon
office scanner
office software
office suite
Office versions
Office Web Apps
Office XML
Office XP
Office:Mac
OfficeJet
OfficeVision
offline
offline advertising
offline backup
offline browser
offline browsing
offline file
offline navigator
offline playback
offline reader
offline storage
offline wallet
offline world
offload
offset
offset lithography
offset press
offset printing
offsite drive
OFM
Ofoto
OFS
OG
OG blockchain
Ogg
Ogg Dirac
Ogg FLAC
Ogg Speex
Ogg Theora
Ogg Vorbis
OggUVS
OGM
OH
ohm
Ohm's Law
ohnosecond
OI
OIC
OID
OIG
Oil Change
oil resistant
oilphobic
OIM
OIS
OJI
Ojo videophone
OK
OK Google
Okamie
Okay
Okidata
OKL4
OL
OLAP
OLAP cube
OLAP Services
olay
OLCP
old calculators
old computers
old fashioned
old machines
old media
old memory
old personal computers
old storage
OLE
OLE automation
OLE automation client
OLE automation controller
OLE automation server
OLE container
OLE control
OLE custom control
OLE Database
OLE DB
OLE server
OLED
OLED examples
OLED layers
OLED lighting
OLED TV
OLED vs. LCD
oleophobic
OLMo
OLPC
OLR
OLTP
OM-Express
OM-Transact
OM1
OMA
Omaha
OMAP
OMB
OME
OMEGAMON
Omegle
OMG
OMI
Omlet
ommer block
Omnibox
omnidirectional
OmniKey keyboard
OmniLink60
OmniPage
OMNIS 7
OMNIS Studio
OmniTRACS
OMR
OMT
OMW
on a chip
on-board diagnostics
on-chain governance
on demand
on-demand computing
on-demand economy
on-demand movies
on-demand printing
on-demand routing protocol
on-demand software
on-demand video
on-device AI
on die
on digital
on-hook
on-net
on premises
on-ramp
on-screen help
on-screen keyboard
on the fly
On the Go
on the Internet
On2
On2Movie
ONA
onboard
onboard intelligence
onboarding
ONC
onchain
onchain analysis
onchain metrics
one-chip computer
one-click ordering
one-foot desktop
One Laptop Per Child
one-off
one-on-one NFT
one-pass color
one-pass color laser
one-pass color printer
one-time number
one-time passcode
one-time password
One UI
one-way hash function
one-wire
OneCare
OneCoin
OneDrive
OneNote
OnePlus
OnePlus 10
OnePlus 10T
OnePlus 11
OnePlus 2
OnePlus 3
OnePlus 3T
OnePlus 4
OnePlus 5
OnePlus 6
OnePlus 6T
OnePlus 7
OnePlus 8
OnePlus 9
OnePlus Nord
OnePlus One
OnePlus X
ones density
OneSearch
OneWeb
onion browser
onion diagram
onion domain
onion router
onion routing
onion site
OnionLand Search Engine
online
online advertising
online app
online app store
online app stores
online application
online assistance
online auction
online backup
online bank
online banking
online business
online casino
online communications
online community
online complex processing
online consultant
online content
online counseling
online coupons
online courses
online currency
online dating
online discussion
online doctor's visit
online documentation
online economy
online education
online email
online exchange
online fatigue
online forum
online gambling
online gaming
online help
online identity
online industry
online influencer
online instructions
online jargon
online journal
online learning
online marketplace
online medical visit
online meetings
online music
online music database
online music service
online music store
online ordering
online organizing
online payments
online payments service
online photo storage
online pinboard
online piracy
online platform
online poker
online postage
online program
online publishing
online resources
online retailer
online selling
online seminar
online service
online service provider
online shop
online shopping
online stalker
online stamps
online storage
online store
online storefront
online teaching
online therapy
online to offline
online training
online transaction processing
online twin
online version
online video
online world
OnlyFans
ONN
OnNow
OnStar
ONT
ontology
ONVIF
Onyx
OO
OO.o
OOA
OOAD
OOB bug
OOB data
OOBE
oobie
OOD
OODB
OODBMS
OOO
OOoFf
OOOS
OOP
OOPL
OOPS
OORDBMS
OOSE
OOT
OOXML
OP
op amp
OP Stack
opacity
Opal
OPC
OPC DA
OPC HDA
OPC UA
OPC Vision
opcode
open
open a port
open access
open architecture
Open Automotive Alliance
Open Blueprint
Open Cloud Manifesto
Open Coherent Accelerator Processor Interface
Open Compute
Open Compute Project
Open Computer Project
open computing
open content
open data
Open Data-link Interface
Open Database Connectivity
Open Desktop
Open Directory Project
Open eBook
open file
Open Graph
Open Group
Open Handset Alliance
open hardware
open interface
open Internet
open language model
Open Look
Open Market
Open Memory Interface
Open Messaging Environment
open metaverse
Open Mobile Alliance
open model
open network
Open Network Computing
Open Network Socket
open networking
Open Office XML
open pipe
open port
Open Pretty Good Privacy
open proxy server
Open RAN
open reel
open relay
open shop
open software
Open Software Foundation
open source
open source AI
open source code
Open Source Definition
open source hardware
Open Source Initiative
open source phone
open source program
open source repositories
open source software
open source telephony
open source Unix
open sourced
open sourced software
open standard
open standards
open storage
open system
Open System Interconnection
open systems
Open Transport
open Web
Open webOS
Open With
Open XML
OpenAI
OpenAI Codex
OpenAir
OpenAL
OpenBSD
OpenCAPI
OpenCL
OpenCourseWare
OpenCV
OpenDDS
OpenDoc
OpenDoc parts
OpenDocument
OpenEdge
OpenELM
OpenFaceSwap
OpenFlow
OpenFlow router
OpenGL
OpenGL ES
OpenI18N
OpenID
opening a port
OpenJDK
OpenLDI
OpenMail
OpenMG
OpenMoko
OpenNT
OpenOffice
OpenOffice.org
OpenPGP
OpenPIC
OpenPOWER
OpenPOWER Foundation
OpenReader
OpenROAD
OpenSea
OpenServer
OpenSocial
OpenSPARC
OpenSSH
OpenSSL
OpenStack
OpenStep
OpenType
OpenURL
OpenView
OpenVME
OpenVMS
OpenVPN
OpenVZ
Openwave
Openwave Mobile Access Gateway
Openwave Mobile Browser
OpenWindows
OpenWrt
Opera
Opera Blob
Opera browser
Opera Coast
Opera Max
Opera Mini
operand
operating environment
operating system
operating system fingerprinting
operating system-level virtualization
operating system software
operating system virtualization
operation
Operation BugDrop
operation code
operation Olympic Games
operational amplifier
operational data store
operations
operations manager
operations research
operations security
operator
operator interface
operator overloading
operator services
OPEX
OPF
OPI
OPLC
OPM
OPML
OPO
OPPO
OPROM
OPS
OPS/OCF
OPSEC
Opsware
opt-in
opt-in email
opt-out
Optane
Opteron
Opti-Jack
optic fiber
optical amplifier
optical audio
optical bands
optical channel
optical character recognition
optical computer
optical cross-connect
optical disc
optical disc library
optical disk
optical disk library
optical drive
optical fiber
optical fibre
optical Gigabit Ethernet
optical image stabilization
optical isolator
optical jack
optical jukebox
optical keyboard
optical library
optical lithography
optical media
optical mouse
optical network terminal
optical networking
optical neural network
optical reader
optical recognition
optical resolution
optical scanner
optical storage
optical storage library
Optical Storage Technology Association
optical switch
optical viewfinder
optical wireless
optical wireless communication
optical zoom
optical zoom range
optically assisted recording
Optimism
optimistic chain
Optimistic Ethereum
optimistic rollup
Optimistic stack
optimizer
optimizing compiler
Optimus
Option key
option ROM
options
options menu
Optochip
optoelectronic
optoelectronics
optoisolator
Opturon
OPX
OQL
OR
Oracle
Oracle 10g
Oracle 11g
Oracle 11i
Oracle 12c
Oracle Browser
Oracle Cloud
Oracle Collaboration Suite
Oracle Content Management SDK
Oracle Data Query
Oracle Database
Oracle Database 11g
Oracle Database 12c
Oracle Developer Suite
Oracle Documents
Oracle E-Business Suite
Oracle Exadata
Oracle Express Server
Oracle Files
Oracle Files Online
Oracle Forms
Oracle Fusion
Oracle Fusion Middleware
Oracle Internet File System
Oracle listener
Oracle Media Server
oracle network
Oracle Parallel Server
Oracle Process Manufacturing
Oracle Rdb
Oracle Reports
Oracle Universal Server
Oracle VM VirtualBox
Oracle8
Oracle8i
Oracle9i
Orange Book
orange button
orange pilled
orange RSS icon
orange tags
orange XML icon
ORB
ORB disk
ORB gateway
Orbix
ORDBMS
ordenador
order
order book
order of magnitude
Ordinal NFTs
ordinal number
Ordinals
ordinateur
Oreo
org
organ on a chip
organ printing
organic
organic chemistry
organic compound
organic development
organic impression
organic LED
organic listing
organic results
organic search
organic search results
organic semiconductor
organization
organizer
organoid
organoid intelligence
orientation
orientation agnostic
Origami
origin server
original design manufacturer
original equipment manufacturer
Original Gangster
Orin
Orion smart glasses
Orkut
ORM
Oro-3D
OROM
orphan
Orphan Annie
orphan block
orphan link
orthogonal
orthogonal programming
orthophotograph
ORU
Oryon CPU
OS
OS 10
OS/2
OS/2 for Windows
OS/2 PM
OS/2 Warp
OS/2 Warp Connect
OS/360
OS/390
OS/400
OS/8
OS-9
OS/9000
OS agnostic
OS hardening
OS virtualization
OS X
OS X Photos
OS X Server
Osborne 1
Osborne computer
Osborne effect
Osborne Executive
Osborne Vixen
OSC
OSCAR
oscillate
oscillator
oscilloscope
OSCOM
OSCP
OSD
OSDL
OSE
OSF
OSF/Motif
OSI
OSI architecture
OSI layers
OSI model
OSI protocol
OSI stack
OSINT
OSMINE
OSP
OSPF
OSR2
OSS
OST file
OSTA
OSU
OSx86 machine
OT
OT/IT integration
OTA
OTA update
OTDR
OTG
OTG USB
OTM
OTOH
OTP
OTPROM
Otrona
OTT
OTT broadcasting
OTT device
OTT services
OTT video
Otter
OUI
OUM
out-of-band
out-of-band data
out-of-band patch
out of box
out of memory
out-of-process server
out of the box
outboard
outboard DAC
outbound link
outbound marketing
outbox
outdent
outer join
outlier
outlier detection
outline font
outline processor
Outlook
Outlook data types
Outlook Express
Outlook file types
Outlook on the web
Outlook recall
Outlook.com
output
output area
output bound
output device
outside plant
outside the box
outsourcing
OutSystems
over-the-air charging
over-the-ear headphones
over the Internet
over the top
over-the-top broadcasting
over-the-top content
over-the-top messaging
over-the-top provider
over-the-top service
over-the-top streaming
over the wire
overbooking
overbuilder
overclock
overclocked
overclocking
OverDrive CPU
overflow error
overflow menu
overflow server
overhead
overlay
overlay card
overlay network
overlinking
overload
overload server
overloading
overprovisioning
oversampling
overscan
oversharenting
overstrike
oversubscribed
oversubscription
Overture
overtype mode
overview of this encyclopedia
overwrite
oVirt
Ovonic
Ovonics
Ovonyx Unified Memory
OVS
OW
OWA
OWASP
OWC
OWL
owner economy
owner tag
ownership economy
ownership tag
OXC
oximeter
oxygen level
oxygen saturation
OxygenOS