> For the complete documentation index, see [llms.txt](https://docs.hollowdb.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hollowdb.xyz/use-cases.md).

# Use-Cases

- [Overview](https://docs.hollowdb.xyz/use-cases/overview.md): In which ways can HollowDB be used?
- [Calendar](https://docs.hollowdb.xyz/use-cases/calendar.md): A calendar application using HollowDB.
- [Anonymous Authentication](https://docs.hollowdb.xyz/use-cases/anonymous-authentication.md): An online authentication application for storing profiles
- [Persona](https://docs.hollowdb.xyz/use-cases/persona.md): Where it all started.