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Cygwin vs MSYS2: catalog facts
Cygwin	MSYS2
Free Free and open source.	Free Free to download and use.
Windows, Command line	Windows, Command line
Large package collection of GNU and Unix tools POSIX API layer for porting Unix software to Windows	Pacman package manager with dependency resolution and updates Up-to-date native builds of GCC, CMake, Python, Rust and more
Cannot run native Linux binaries; software must be rebuilt Requires Windows 8.1 or later for current versions	Windows only Several environments to choose between can confuse newcomers
Downloadable app	Downloadable app
Open source	Open source
License: GPL and LGPL (varies by package)	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.