The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Member of Board of Directors (3 members)
- Member of Partner Organization (6 members)
- Members of Partner Organizations (6 members)
- Members of the Humanitarian Affairs Unit (15 members)
- MobLang Conferences (1 member)
- Mobile Apps (10 members)
- Multicultural Cyprus Events (7 members)
- N.E.T.S. Academic Staff (14 members)
- N.E.T.S. Board of Trustees (27 members)
- NML Projects (22 members)
- Netherlands interns (1 member)
- Neuroscience Conferences (1 member)
- Neuroscience research centers (2 members)
- Newspaper Articles (1 member)
- Newspaper Promotion (22 members)
- Non-funded Projects (1 member)
- ONLIFE Co-authors (13 members)
- ONLIFE Co-authors , Collaborating Scientists, Future Worlds Network Members (0 members)
- Olive Branch Events (31 members)
- Open Days (1 member)
- Open Public Events (2 members)
- Operations (4 members)
- Organization (1 member)
- Organizational Roles (32 members)
- PEERS Conferences (1 member)
- PSU Exchange Student (14 members)
- PSU Interns (1 member)
- Pages using DynamicPageList3 parser tag (3 members)
- Pages using duplicate arguments in template calls (42 members)
- Pages with broken file links (14 members)
- Panel Discussions (7 members)
- Participants 1st Intern. SDDP School (6 members)
- Participants 2nd Intern. SDDP School (15 members)
- Participants 3rd Intern. SDDP School (22 members)
- Participants 4th Intern. SDDP School (0 members)
- Participants Intern. SDDP School (7 members)
- Participants of Reinventing democracy (YiA 1.3) SDDP (2 members)
- Partner Organizations (6 members)
- Partner Organizations (CY) (62 members)
- Partner Organizations (EU) (147 members)
- Partner Organizations (International) (6 members)
- Partner Organizations (US) (5 members)
- Partners (2 members)
- Partners (CY) (1 member)
- Past Associates (101 members)
- Past External Associate (5 members)
- Past Memberships (1 member)
- Past Volunteers (11 members)
- Past interns (116 members)
- Peace Groups (1 member)