Alexandrie

The open-source, offline-first Notion, Obsidian & Confluence alternative. Advanced Markdown, multi-tenant teams, OIDC/SSO, and local S3 backups. Deploy in one command. Maintained by Smaug6739 on GitHub, where it has earned 2,710 stars from the community.

It's actively developed around markdown, note-taking, docker, and is a solid reference for anyone building with these tools.