thingsaurus
This is a 'thesaurus for things' or similarity engine: results show things that have something in common with what you enter. The more stars, the more things in common! You can use it for research, recommendations or simply to explore ideas and related subjects.
Here are your results for Copyleft...
Stars indicate closer matches.
Affero General Public License 
- Common Development and Distribution License
- Common Public Attribution License
- European Union Public Licence
- Free Art License
- GNU Free Documentation License
- GNU General Public License
- GNU Lesser General Public License
- GPL font exception
- Mozilla Public License
- Commercial use of copyleft works
- Openlaw
- Creative Commons license
- Sharism
- Copyright symbol
- Sound recording copyright symbol
- Criticism of copyright
- Creator ownership in comics
- Pirate Party
- Project Harmony (FOSS group)
- All rights reversed
- Authors Alliance
- Creative Commons
- Creative Commons India
- Creative Commons-licensed content directories
- Viral license
- Digital commons (economics)
- Gleducar
- Korean Open Access License
- Open Database License
- Patentleft
- Share-alike
- Tiny BASIC
- Ampersand
- Apex (typography)
- Aristarchian symbols
- Asterism (typography)
- At sign
- Backslash
- Backtick
- Basis point
- Bullet (typography)
- Caret
- Caret (proofreading)
- Check mark
- Colon (punctuation)
- Commercial minus sign
- Currency sign (typography)
- Dagger (mark)
- Dinkus
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