Treesheets
Treesheets is a free, open-source office app for Windows, macOS and Linux. Hierarchical spreadsheet: a free-form data organizer that replaces outliners, mind maps and spreadsheets. It has 3,178 GitHub stars and is released under the Zlib license. Its source code is on GitHub at aardappel/treesheets.
github.com/aardappel/treesheets (opens in a new tab)
Data as of from the GitHub API; description from the project's repository. Report an error
About Treesheets
Welcome to the TreeSheets productivity tool! ============================================ TreeSheets is a "hierarchical spreadsheet" that is a great replacement for spreadsheets, mind mappers, outliners, PIMs, text editors and small databases.
Install Treesheets
Package names found in the project's README. Each links to its package page so you can check the publisher first.
flatpak install flathub com.strlen.TreeSheetsSimilar apps
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Is Treesheets free and open source?
Yes. Treesheets's source code is public on GitHub under the Zlib license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Treesheets?
Flathub: flatpak install flathub com.strlen.TreeSheets. The commands are on this page. Installers are also on its GitHub Releases page (latest: v2.22.5).
Is Treesheets still maintained?
The repository's most recent commit was on Oct 26, 2026. appsgit only lists apps whose repository had a commit in the last six months.