Stop deleting games due to low disk space! Game Compressor uses advanced Windows LZX technology to reduce game file sizes by up to 50%.

CompactGUI is described as 'Reduce the space taken up by games and programs on disk by using native Windows APIs' and is a File Compressor in the os & utilities category. There are three alternatives to CompactGUI for Windows. The best CompactGUI alternative is Game Compressor. It's not free, so if you're looking for a free alternative, you could try Compactor or WinDriveSpace.
Stop deleting games due to low disk space! Game Compressor uses advanced Windows LZX technology to reduce game file sizes by up to 50%.

With modern lightweight compression algorithms running at gigabytes per second per core, it's practically a no-brainer to apply them to filesystems to make better use of storage and IO.



WinDriveSpace frees disk space by compressing suitable files with Windows' built-in file compression, without deleting files.

Both are front-end GUIs for the Windows utility compact.exe, so they perform the same role. Both have intuitive GUIs, are portable, provide the ability to analyze folders to check for existing compression. CompactGUI pulls ahead a bit with awareness of Steam folders and the ability to estimate compressed size of folders based on other users results online. Compactor has a better breakdown pre-analysis of what is compressible and is a little quicker to navigate around the UI.