X/Open
Chromosome X open reading frame 57
X.Org Server
X/Open XA
OpenX Technologies
OpenX
OpenType
Open edX
Cross-country skiing at the 2014 Winter Paralympics – 4 x 2.5 kilometre open relay
X/Open Transport Interface
RM-ODP
OpenZFS
Pluggable Authentication Module
Federated Naming Service
Unix-like
OSI model
Guard (grappling)
Revive Adserver
Liero
Xvid
Xinuos
Cross-country skiing at the 2022 Winter Paralympics – Open 4 × 2.5 kilometre relay
Hi-hat
Beats of Rage
Cross-country skiing at the 2010 Winter Paralympics – Women's 3 x 2.5 km Relay
Apple Developer Tools
Graphics pipeline
Simon Dominic
Cross-country skiing at the 2018 Winter Paralympics – 4 × 2.5 kilometre open relay
Jeff Gordon in popular culture
Tucows
Civil Rights Act of 1968
Booting
Framework Programmes for Research and Technological Development
Rooster Teeth
School District 22 Vernon
List of coalition military operations of the Iraq War
List of K-1 events