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kardi notesStandard Notes
Free

Free and open source under the GPL 3.0.

 Freemium

Free tier with unlimited encrypted sync and plain text notes. Paid plans add editors, file…

Windows, macOS, Linux, Android, iOS, Web Windows, macOS, Linux, Android, iOS, Web, Self-hosted, Browser extension
  • Encrypted notes readable only by you
  • Clients for desktop, mobile and the web
  • End-to-end encrypted, with free sync on unlimited devices
  • Server code is public and self-hosting is documented
  • Lost password or device means lost data
  • Built and maintained by a single developer
  • The free tier is plain text only; editors are a paid feature
  • An account is required even for local use
Downloadable app, Web application Downloadable app, Self-hosted, Browser extension
Open source Open source
License: GPL-3.0 License: AGPL-3.0
Not stated if an account is needed Account needed
Not stated if it works offline Works offline

Checked October 2, 2026

Checked September 21, 2026

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