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CompactGUI

CompactGUI is a free, open-source gaming app for Windows. Reduce the space taken up by games and programs on disk by using native Windows APIs. It has 8,967 GitHub stars and is released under the GPL-3.0 license. Its source code is on GitHub at IridiumIO/CompactGUI.

github.com/IridiumIO/CompactGUI (opens in a new tab)

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About CompactGUI

CompactGUI transparently compresses your games and programs reducing the space they use without affecting their functionality. It works directly with the Win32 API to achieve the same thing as the native compact.exe command-line tool available from Windows 10 onwards.

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FAQ

CompactGUI FAQ

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What is CompactGUI?

CompactGUI is a free, open-source gaming app for Windows. Reduce the space taken up by games and programs on disk by using native Windows APIs. It has 8,967 GitHub stars and is released under the GPL-3.0 license. Its source code is on GitHub at IridiumIO/CompactGUI.

Is CompactGUI free and open source?

Yes. CompactGUI's source code is public on GitHub under the GPL-3.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.

How do I install CompactGUI?

Download the installer for Windows from its GitHub Releases page (latest: v4.0.0-beta.12).

Is CompactGUI still maintained?

The repository's most recent commit was on Oct 2, 2026. appsgit only lists apps whose repository had a commit in the last six months.