AppFlowy

AppFlowy is an open-source workspace for notes, documents, and project tracking, arranged as a tree of pages that hold rich text, tables, boards, and calendars. Databases can be shown as a grid, kanban, or calendar view, and pages support real-time co-editing, comments, and per-page sharing.

People use it as a private alternative to hosted workspace tools for team wikis, meeting notes, and lightweight project management, sometimes pairing it with a local language model for search and drafting.

Self-hosting means your workspace and its attachments live on servers you control, without seat-based pricing and with straightforward exports.