This directory hierarchy is sorted roughly, but not completely, alphabetically:

CodeTemplates
- DriverStubs
Common
Drivers
- Board
  - ADAFRUITU4
  - ATAVRUSBRF01
  - BENITO
  - BLACKCAT
  - BUI
  - BUMBLEB
  - CULV3
  - EVK527
  - JMDBU2
  - MAXIMUS
  - MICROSIN162
  - MINIMUS
  - OLIMEX162
  - RZUSBSTICK
  - STK525
  - STK526
  - TEENSY
  - UDIP
  - UNO
  - USBFOO
  - USBKEY
  - USBTINYMKII
  - XPLAIN
- Misc
- Peripheral
  - AVRU4U6U7
- USB
  - Class
    - Common
    - Device
    - Host
  - HighLevel
  - LowLevel
Scheduler