The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Synthetic Biology (4 members)
- Systemtheorie (2 members)
- TBA (2 members)
- Telematic (1 member)
- Template (73 members)
- Teri Rueb (1 member)
- Test (6 members)
- Textil (1 member)
- Textile (1 member)
- Theorie (28 members)
- Theresa Schubert (2 members)
- Thomas Adler (1 member)
- Thomas Hawranke (2 members)
- Time (1 member)
- Tom Hanke (2 members)
- Tongji University (1 member)
- Tool (1 member)
- Toolkit (1 member)
- Tools (8 members)
- Tracking (3 members)
- Tutorial (1 member)
- Tutorium (2 members)
- Typo (4 members)
- Typografie hinzugefügt (1 member)
- Ubiquitous Computing (3 members)
- Unconventional Interfaces (1 member)
- Urbanism (5 members)
- Ursula Damm (47 members)
- VPN (2 members)
- Vaclav Harsha (1 member)
- Vector Field (1 member)
- Video (4 members)
- Virtual reality (9 members)
- Visualization (1 member)
- Vorkurs (19 members)
- Vvvv (3 members)
- WS07 (3 members)
- WS08 (10 members)
- WS09 (37 members)
- WS10 (22 members)
- WS11 (24 members)
- WS12 (19 members)
- WS12/13 (0 members)
- WS13 (11 members)
- WS14 (11 members)
- WS15 (13 members)
- WS16 (12 members)
- WS17 (10 members)
- WS18 (14 members)
- WS19 (9 members)