Skip to content
appsgit

Flat

Flat is a free, open-source diagram and mind-mapping app for macOS. Project flat is the Web, Windows and macOS client of Agora Flat open source classroom. It has 6,438 GitHub stars and is released under the MIT license. Its source code is on GitHub at netless-io/flat.

github.com/netless-io/flat (opens in a new tab)

Download from GitHub (opens in a new tab)View on GitHub (opens in a new tab)

About Flat

Agora Flat Project flat is the Web, Windows and macOS client of Agora Flat open source classroom. 中文 You can build and run the Flat client without a server. This repository includes the following projects:

Similar apps

More open-source diagram and mind-mapping apps

All diagrams & mind maps

FAQ

Flat FAQ

Still curious? Email info@appsgit.com.

What is Flat?

Flat is a free, open-source diagram and mind-mapping app for macOS. Project flat is the Web, Windows and macOS client of Agora Flat open source classroom. It has 6,438 GitHub stars and is released under the MIT license. Its source code is on GitHub at netless-io/flat.

Is Flat free and open source?

Yes. Flat's source code is public on GitHub under the MIT license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.

How do I install Flat?

Download the installer for macOS from its GitHub Releases page (latest: v2.3.6).

Is Flat still maintained?

The repository's most recent commit was on Jul 8, 2026. appsgit only lists apps whose repository had a commit in the last six months.