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.

Comments about Compactor as an Alternative to CompactGUI


Compactor is the most popular Windows alternative to CompactGUI.
Compactor is the most popular Open Source & free alternative to CompactGUI.
- Compactor is Free and Open Source

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.