The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- NEO Retro Coding Compo 2011 (18 members)
- NEO Retro Coding Compo 2012 (22 members)
- NEO Retro Coding Compo 2013 (16 members)
- NEO Spring Coding Compo 2006 (49 members)
- NEO Spring Coding Compo 2007 (55 members)
- NEO Spring Coding Compo 2008 (73 members)
- NEO Spring Coding Compo 2009 (43 members)
- NEO Summer Coding Compo 2006 (80 members)
- NEO Summer Coding Compo 2007 (62 members)
- NEO Summer Coding Compo 2008 (65 members)
- NEO Summer Coding Compo 2009 (46 members)
- NEO Summer Compo 2007 (0 members)
- Navbox (navigational) templates (1 member)
- OpenBOR Games on PSP (40 members)
- Open source homebrew (10 members)
- Operating Systems on 3DS (3 members)
- Operating Systems on DS (28 members)
- Operating Systems on PSP (19 members)
- Other 3DS homebrew applications (0 members)
- Other 3DS homebrew emulators (0 members)
- Other 3DS homebrew games (0 members)
- Other Applications on 3DS (88 members)
- Other Applications on DS (255 members)
- Other Applications on GB (52 members)
- Other Applications on GBA (21 members)
- Other Applications on PSP (154 members)
- Other Emulators ON 3DS (0 members)
- Other Emulators on 3DS (2 members)
- Other Emulators on DS (9 members)
- Other Emulators on GB (2 members)
- Other Emulators on GBA (9 members)
- Other Emulators on PSP (11 members)
- Other GBA applications (0 members)
- Other Games on 3DS (21 members)
- Other Games on DS (207 members)
- Other Games on GB (43 members)
- Other Games on GBA (31 members)
- Other Games on PSP (94 members)
- Other Games on Xbox (5 members)
- Other PC Utilities for 3DS (68 members)
- Other PC Utilities for DS (20 members)
- Other PC Utilities for GB (10 members)
- Other PC Utilities for GBA (4 members)
- Other PC Utilities for PSP (20 members)
- Other PSP homebrew applications (0 members)
- Other PSP homebrew emulators (1 member)
- Other PSP homebrew games (0 members)
- Other homebrew emulators on DS (0 members)
- Other homebrew emulators on GBA (0 members)
- Other homebrew emulators on PSP (0 members)