FreeX
Ultraverse
FreeX Blast
FreeX FXT
FreeX Arrow
FreeX Joker
FreeX Moon
FreeX Blade
FreeX Gemini
Free-electron laser
European XFEL
Freedesktop.org
Born to Be Free (X Japan song)
Germfree Adolescents
Little Free Library
Free-orbit experiment with laser interferometry X-rays
Component Object Model
Bremsstrahlung
GNU/Linux naming controversy
ReactOS
XXXTentacion
Jedward
Xbox network
Atmospheric entry
Phases of Operation Car Wash
All My Heroes Are Cornballs
Tableless web design