The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Timers peripherals (2 members)
- ToBeAlignedWithModel (2 members)
- Tools (2 members)
- Trace and debug peripherals (5 members)
- Trace and debug tools (7 members)
- Tracing tools (4 members)
- Training zone (2 members)
- Transversal categories (18 members)
- Troubleshooting grids (10 members)
- Trusted Firmware-A (5 members)
- Trusted Firmware-A (BL2) (5 members)
- Trusted Firmware-A (BL31) (1 member)
- Trusted Firmware-M (6 members)
- U-Boot (16 members)
- U-Boot Visual (3 members)
- UI frameworks (1 member)
- USB (14 members)
- Using models (13 members)
- V4L2 (23 members)
- Visual (13 members)
- Visual hardware components (2 members)
- Visual peripherals (10 members)
- WLAN (6 members)
- Watchdog (2 members)
- Watchdog peripherals (2 members)
- Wayland/Weston (0 members)
- Wayland Weston (13 members)
- Welcome tab (1 member)
- Wiki archives tab (1 member)
- Writing articles (2 members)
- X-LINUX-AI expansion package (7 members)
- X-LINUX-AWS expansion package (3 members)
- X-LINUX-AZURE expansion package (3 members)
- X-LINUX-ISP expansion package (5 members)
- X-LINUX-NFC expansion packages (2 members)
- X-LINUX-QT Expansion Package (4 members)
- X-LINUX-QT How To (3 members)
- X-LINUX-QT expansion package (0 members)
- X-LINUX-RT expansion package (1 member)
- X-LINUX-TPM expansion package (1 member)
- X-LINUX-TSNSWCH Expansion Package (0 members)
- X-LINUX-TSNSWCH expansion package (1 member)
- Yocto-based OpenSTLinux embedded software (6 members)