1. Infrastructure
1.1. Digital Commons
1.1.1. Internet
1.1.2. Open source languages
1.1.2.1. Linux
1.1.2.2. Java
1.1.3. Open source software
1.1.4. Wikipedia
1.2. Economic
1.2.1. Gift economies
1.2.2. Labor
1.2.3. Money
1.2.3.1. Local currencies
1.2.4. Solidarity Economy
1.2.5. Time exchanges
1.3. Health commons
1.3.1. Public health care
1.3.2. Public hospitals
1.4. Parks
1.5. Public broadcasts
1.5.1. Radio
1.5.2. Television
1.6. Public safety
1.7. Public Spaces
1.8. Sharing infrastructure
1.8.1. Creative Commons
1.8.2. Public domain
1.9. Sidewalks
1.10. Transportation
1.10.1. Airports
1.10.2. Ferries
1.10.3. Rail
1.10.4. Roads
1.11. Water treatment systems
2. Community Commons
2.1. Community Gardens
2.2. Fisheries
2.3. Forests
2.4. Indigenous lands, water, other
2.5. Land trusts
2.6. Pastures
2.7. Subsistence commons
2.8. Water Irrigation Systems
3. Aspirational
3.1. Peace
3.2. Rights
3.2.1. Human
3.2.1.1. Privacy
3.2.1.2. To commons
3.2.1.3. To livable ecosystem
3.2.1.4. To water
3.2.2. Nature
3.2.2.1. Living beings/species
3.2.2.2. Ecosystems
3.3. Silence
4. Knowledge Commons
4.1. Agricultural knowledge
4.2. Education
4.2.1. Public K-12
4.2.2. Public Universities
4.3. Libraries
4.4. Mathematics
4.5. Open data
4.6. Pharmaceutical research (publicly funded)
4.7. Science
4.7.1. Open science
4.7.2. Taxonomies
4.8. Wikipedia
5. Cultural Commons
5.1. Art
5.1.1. Public art
5.1.2. CC art
5.2. Fashion
5.3. Food
5.3.1. Recipes
5.4. Historical/heritage sites
5.5. Indigenous culture
5.6. Music
5.7. Spiritual/sacred
5.8. Sports
5.8.1. Baseball, soccer, etc
5.9. Story
5.9.1. Folk tales
5.9.2. Mythology
6. Nature Commons
6.1. Antarctica
6.2. Arctic
6.3. Atmosphere
6.4. Biodiversity
6.4.1. Genetics
6.5. Electromagnetic Spectrum
6.6. Energy
6.6.1. Hydro
6.6.2. Oil/gas
6.6.3. Sunlight
6.6.4. Thermal
6.6.5. Wind
6.7. Food Seeds
6.8. Minerals
6.9. Outer Space
6.9.1. Asteroid belt
6.9.2. Moon
6.9.3. Other planets
6.9.4. Sun
6.10. Soil
6.11. Water
6.11.1. Lakes
6.11.1.1. Great Lakes Commons
6.11.2. Oceans
6.11.3. Rivers
6.11.4. Rain