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CheckvistTreeSheets
Freemium

A free plan is offered, with paid plans for more features.

 Free

The open-source software is available without a license fee. Hosting, hardware and…

Web, Browser extension Windows, macOS, Linux
  • Keyboard shortcuts for nearly every action, plus a command palette
  • Unlimited hierarchy with filtering and quick navigation
  • Combines hierarchical outlines with spreadsheet-like structure.
  • Runs as an online service rather than a local app
  • Outline-only structure may feel limiting for long-form writing
  • Its nested-grid workflow takes some adjustment for new users.
Web application, Hosted service, Browser extension Downloadable app
Closed source Open source
License not stated License: Zlib
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 September 22, 2026

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