- General resources
- API functions (UnitName, GetSpellInfo, etc.)
- Events (PLAYER_LOGIN, UNIT_ENTERING_VEHICLE, etc.)
- Widget API (frames, buttons, etc.)
- Secure templates (action buttons, unit frames, etc.)
- WoW widget script handlers (OnClick, OnEvent, etc.)
- Console variables (game settings)
- Data types (unitID, actionSlot, etc.)
- Blizzard UI code
- Blizzard UI localizations
- Lua functions
- Tutorials and other info
- Lua editors and other utility programs
- Notepad2-mod is a lightweight text editor with Lua syntax highlighting
Definitely some duplicates on there but I don't have time to go through and sort it out right now.