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MinGW-w64 vs MSYS2: catalog facts
MinGW-w64	MSYS2
Free Free and open source under a mix of ZPL, LGPL and public domain terms.	Free Free to download and use.
Windows, macOS, Linux, Command line	Windows, Command line
Builds native 32-bit and 64-bit Windows binaries with GCC Works as a cross-compiler from Linux and macOS	Pacman package manager with dependency resolution and updates Up-to-date native builds of GCC, CMake, Python, Rust and more
Toolchain setup can be confusing, with many third-party builds Command-line only, no bundled IDE	Windows only Several environments to choose between can confuse newcomers
Downloadable app	Downloadable app
Open source	Open source
License: ZPL-2.1, LGPL-2.0, GPL and public domain	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.