is it really FOSS?

BookStack

A multi-user documentation platform

Yes!
This project appears to be free and open source software.

Details

The BookStack project is fully FOSS under an MIT license, and it has been so for almost 10 years since original release. Supporting elements are also provided as open source via repositories on Codeberg.

The project is funded by donations, sponsorships and support services.

Details last reviewed 2025-06-03. Mistakes or outdated information? Let us know by opening an issue on Codeberg.