The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Library works about Palestine (8 members)
- Library works about Peru (1 member)
- Library works about Philosophy (0 members)
- Library works about Soviet foreign policy (1 member)
- Library works about Stalin (5 members)
- Library works about Venezuela (1 member)
- Library works about Vietnam (2 members)
- Library works about Yugoslavia (1 member)
- Library works about anti-communist economists (0 members)
- Library works about decolonisation (20 members)
- Library works about economics (8 members)
- Library works about fascism (5 members)
- Library works about feminism (10 members)
- Library works about geopolitics (6 members)
- Library works about history (1 member)
- Library works about imperialism (23 members)
- Library works about military theory (10 members)
- Library works about philosophy (13 members)
- Library works about religion (1 member)
- Library works about revisionism (11 members)
- Library works about revisionist tendencies (0 members)
- Library works about science (6 members)
- Library works about the 2022 Russo-Ukrainian conflict (1 member)
- Library works about the DPRK (7 members)
- Library works about the GDR (3 members)
- Library works about the Moscow trials (1 member)
- Library works about the Soviet Union (20 members)
- Library works about the United States of America (12 members)
- Library works about the interwar period (1 member)
- Library works about the meat industry (1 member)
- Library works about veganism (1 member)
- Library works by Albert Einstein (1 member)
- Library works by Alexandra Kollontai (9 members)
- Library works by Alicia Jrapko (1 member)
- Library works by Anna Louise Strong (1 member)
- Library works by Antonio Gramsci (3 members)
- Library works by Bobby Sands (8 members)
- Library works by Carlos Marighella (2 members)
- Library works by Che Guevara (2 members)
- Library works by Cheng Enfu (2 members)
- Library works by Chris Harman (1 member)
- Library works by Clara Zetkin (2 members)
- Library works by David Graeb (1 member)
- Library works by Deng Xiaoping (18 members)
- Library works by Department for Strategic Services (Provisionsal) (1 member)
- Library works by Domenico Losurdo (6 members)
- Library works by Edward Said (1 member)
- Library works by Elizabeth Gurley Flynn (1 member)
- Library works by Enver Hoxha (7 members)
- Library works by Eugene V. Debs (7 members)