The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Pages with ignored display titles (1 member)
- Pages with syntax highlighting errors (37 members)
- Particle System (1 member)
- Particles (1 member)
- Patterns in Nature (2 members)
- Patterns in Society (2 members)
- Performance (3 members)
- Philosophie (4 members)
- Physical Computing (8 members)
- Pixels (1 member)
- Plugin (4 members)
- Poetry (1 member)
- Printed Electronics (8 members)
- Processing (56 members)
- Programmiersprachen (70 members)
- Programmierung (2 members)
- Programming (7 members)
- Projection Mapping (2 members)
- Projekt (10 members)
- Projektliste (7 members)