Glossar : O
- O2
- OAA
- Oak Trail
- Oakley
- OAuth
- Objective-C
- Objektiv
- OBS
- Obsidian Entertainment
- Occupy Wall Street
- OCP
- OCR
- Octa-Core
- Octane
- Oculus
- Oculus Rift
- OCZ
- Oddworld
- Odroid
- Office
- Office 15
- Office 2013
- Office 2016
- Office2010
- Office-Suite
- Offmaps
- OFP
- Ogg
- OIN
- Okuna
- Olaf Scholz
- OLED
- OLED-Lampe
- Oliver Samwer
- OLPC
- Olympia
- Olympus
- OMAP 5
- Omni ROM
- One 2
- One (M9)
- Onedrive
- Oneget
- Oneplus
- Oneplus 6
- Oneplus 7
- Oneplus 8
- Oneplus Five
- Oneplus Nord
- Oneplus One
- Oneplus Three
- Oneplus Two
- Oneplus X
- Onkyo
- Onlinebanking
- Onlinedurchsuchung
- Onlineforum
- Onlinehandel
- Onlineshop
- Onlinewerbung
- Onlive
- OOXML
- Opa
- Opel
- Open Access
- Open Compute Foundation
- Open Data
- Open Hardware
- Open RAN
- Open Source
- Open Virtualization Alliance
- OpenAI
- OpenBSD
- OpenCL
- Openclaw
- Opendesk
- Opendocument
- OpenFlow
- OpenGL
- OpenGL ES
- OpenID
- OpenJDK
- Openleaks
- Openmoko
- Openoffice
- OpenPGP
- OpenSocial
- OpenSolaris
- Opensource-DVD
- OpenSSH
- OpenSSL
- Openstack
- Openstreetmap
- OpenSubdiv
- Opentalk
- OpenVZ
- OpenWorm
- OpenWRT
- OpenX
- Open-Xchange
- Opera
- Opera Mobile
- Opera10
- OperaMini
- Operation Eikonal
- Operation Glotaic
- Operation Payback
- OpFacebook
- ÖPNV
- Oppo
- Optimus 3D Max
- Optimus Maximus
- Optisches Netzwerk
- Optochip
- Opus
- Oracle
- Oracle vs. Google
- Orange Com
- ORBX.js
- Orchestrierung
- Origin
- OS X
- OS X 10.11
- OSHW
- OSI
- Osram
- Otelo
- Otherland
- OTRS
- Otto
- Outcast
- Outlook
- Ouya
- Overclocking
- Overwatch
- OVH
- Owncloud
- OX Documents
- Oxide Games
- OxygenOS