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flatnotesplumio
Free

Free to self-host from the public GitHub repository.

 Free

Free and open source under the AGPL-3.0 licence, with no subscriptions.

Web, Self-hosted Web, Self-hosted
  • No database; notes are plain Markdown files
  • Flat folder storage is easy to back up or sync
  • Quick Docker Compose deployment
  • Document encryption for notes
  • Requires running your own server
  • Flat folder structure offers little hierarchy for large collections
  • Smaller project with a modest user base
  • Needs a server to run on
Self-hosted Self-hosted
Open source Open source
License not stated License: AGPL-3.0
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 24, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.