- Global Symbols - formerly Tawasol, open-licensed symbols with a focus on culturally-specific concepts, includes translation tools (CC By-SA)
- OpenSymbols - collection of multiple open-licensed symbol libraries, including API (60,000 symbols, various licenses)
- Mulberry - unmaintained symbol library (3,000 symbols, CC By-SA)
- Sclera - high-contrast white-on-black symbol library (11,000 symbols, CC By-NC)
- ARASAAC - colorful open-licensed symbol library (13,000 symbols, CC By-NC-SA)