The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.

• AJAX‏‎ (8 members)
• AMC Academic Moodle Cooperation‏‎ (1 member)
• About Moodle‏‎ (24 members)
• Accessibility‏‎ (5 members)
• Accounts‏‎ (14 members)
• Activity modules‏‎ (19 members)
• Add-on‏‎ (3 members)
• Administrator‏‎ (48 members)
• Assignment‏‎ (29 members)
• Audio‏‎ (6 members)
• Authentication‏‎ (30 members)
• Backup‏‎ (47 members)
• Badges‏‎ (20 members)
• Biology‏‎ (2 members)
• Block‏‎ (145 members)
• Blocks‏‎ (4 members)
• Blog‏‎ (21 members)
• Book‏‎ (11 members)
• Calendar‏‎ (15 members)
• Capabilities‏‎ (591 members)
• Certificate‏‎ (7 members)
• Chat‏‎ (9 members)
• Chemistry‏‎ (19 members)
• Choice‏‎ (8 members)
• Coding guidelines‏‎ (14 members)
• Comments‏‎ (8 members)
• Common Cartridge‏‎ (1 member)
• Competencies‏‎ (42 members)
• Completion‏‎ (18 members)
• Conditional activities‏‎ (3 members)
• Constructivism‏‎ (0 members)
• Contributed code‏‎ (315 members)
• Course‏‎ (71 members)
• Course format‏‎ (5 members)
• Credits‏‎ (1 member)
• DB‏‎ (18 members)
• Database‏‎ (0 members)
• Database activity module‏‎ (28 members)
• Dataform module‏‎ (72 members)
• Datalynx module‏‎ (19 members)
• Developer‏‎ (217 members)
• Developer tools‏‎ (12 members)
• Disambiguation‏‎ (11 members)
• Discipline-specific Moodling‏‎ (9 members)
• ELIS‏‎ (29 members)
• ELIS Admin‏‎ (12 members)
• ELIS Programs‏‎ (6 members)
• ELIS Users‏‎ (3 members)
• Editing text‏‎ (10 members)
• Enrolment‏‎ (59 members)
• Environment‏‎ (32 members)
• Error‏‎ (103 members)
• Events‏‎ (4 members)
• Examples of use‏‎ (1 member)
• External tool‏‎ (10 members)
• FAQ‏‎ (84 members)
• Feedback‏‎ (21 members)
• File‏‎ (3 members)
• Files‏‎ (9 members)
• Filter‏‎ (40 members)
• Firefox extensions‏‎ (2 members)
• Flax‏‎ (3 members)
• Folder‏‎ (2 members)
• Formslib‏‎ (8 members)
• Forum‏‎ (44 members)
• Front page‏‎ (2 members)
• GHOP‏‎ (1 member)
• GSOC‏‎ (1 member)
• Game‏‎ (7 members)
• Git‏‎ (11 members)
• Glossary‏‎ (25 members)
• Google Apps for Education‏‎ (1 member)
• Grades‏‎ (84 members)
• Groups‏‎ (21 members)
• HTML editor‏‎ (2 members)
• Help‏‎ (3 members)
• Hotpot‏‎ (10 members)
• Hub‏‎ (19 members)
• IMS content package‏‎ (7 members)
• Installation‏‎ (76 members)
• Installations‏‎ (4 members)
• Javascript‏‎ (8 members)
• Label‏‎ (3 members)
• Language‏‎ (21 members)
• Language teaching‏‎ (3 members)
• Learning management system‏‎ (0 members)
• Lesson‏‎ (28 members)
• MNET‏‎ (1 member)
• MNet‏‎ (31 members)
• Mac OS X‏‎ (5 members)
• Mathematics‏‎ (33 members)
• Messaging‏‎ (18 members)
• Mobile‏‎ (16 members)
• Modules‏‎ (2 members)
• Moodle.org‏‎ (3 members)
• Moodle.org improvements‏‎ (9 members)
• Moodle23‏‎ (1 member)
• MoodleDocs‏‎ (32 members)
• MoodleDocs administration‏‎ (2 members)
• MoodleTxt‏‎ (19 members)
• Moodle 1.7‏‎ (3 members)
• Moodle 1.8‏‎ (2 members)
• Moodle 1.9‏‎ (13 members)
• Moodle 2.0‏‎ (82 members)
• Moodle 2.1‏‎ (1 member)
• Moodle For Mobiles‏‎ (1 member)
• Moodle User Interface Guidelines‏‎ (17 members)
• Moodleposium‏‎ (1 member)
• Moodleposium/2010‏‎ (1 member)
• Moved to dev docs‏‎ (21 members)
• Multimedia‏‎ (15 members)
• Music‏‎ (4 members)
• New features‏‎ (38 members)
• Notes‏‎ (4 members)
• Obsolete‏‎ (2 members)
• Open University‏‎ (12 members)
• Output‏‎ (1 member)
• Page‏‎ (3 members)
• Pages for deletion‏‎ (1 member)
• Pages needing improvement‏‎ (4 members)
• Pages requiring a review‏‎ (1 member)
• Pages requiring updating‏‎ (9 members)
• Pages that use a deprecated format of the math tags‏‎ (2 members)
• Pages with broken file links‏‎ (31 members)
• Pedagogy‏‎ (2 members)
• Performance‏‎ (14 members)
• Physics‏‎ (2 members)
• Plagiarism prevention‏‎ (15 members)
• Plugin‏‎ (201 members)
• Portfolios‏‎ (29 members)
• Processes‏‎ (5 members)
• Programming‏‎ (6 members)
• Project‏‎ (4 members)
• Quality Assurance‏‎ (7 members)
• Questions‏‎ (114 members)
• Quick guide‏‎ (15 members)
• Quiz‏‎ (96 members)
• RSS‏‎ (13 members)
• Release notes‏‎ (2 members)
• Report‏‎ (61 members)
• Repositories‏‎ (64 members)
• Resource‏‎ (29 members)
• Restrict access‏‎ (4 members)
• Roles‏‎ (65 members)
• SCORM‏‎ (15 members)
• SQL databases‏‎ (9 members)
• Scheduler‏‎ (11 members)
• Search‏‎ (2 members)
• Security‏‎ (54 members)
• Site administration‏‎ (209 members)
• Skills repository (Referentiel)‏‎ (7 members)
• Software‏‎ (1 member)
• Stubs‏‎ (59 members)
• Student‏‎ (3 members)
• Survey‏‎ (7 members)
• Tags‏‎ (19 members)
• Teacher‏‎ (45 members)
• Templates‏‎ (3 members)
• Themes‏‎ (39 members)
• Turnitin‏‎ (4 members)
• Turnitin's Moodle Direct Integration‏‎ (5 members)
• Tutorial‏‎ (8 members)
• URL‏‎ (2 members)
• UTF-8‏‎ (19 members)
• Usability‏‎ (18 members)
• User‏‎ (1 member)
• User:James Neill‏‎ (2 members)
• User:James Neill/Moodleposium‏‎ (1 member)
• User:James Neill/Moodleposium/2009‏‎ (18 members)
• User:James Neill/Moodleposium/2010‏‎ (9 members)
• User:Jtneill/Moodle‏‎ (1 member)
• Voice‏‎ (17 members)
• Web Services‏‎ (19 members)
• Wiki‏‎ (18 members)
• Windows‏‎ (1 member)
• Workshop‏‎ (23 members)
• XMLDB‏‎ (29 members)
• monitor‏‎ (1 member)