Linux-like environment for Windows making it possible to port software running on POSIX systems (such as Linux, BSD, and Unix systems) to Windows. News, documentation and software downloads.

Compiler system uses GCC to produce Windows programs. Win32 ports of GCC, GDB, binutils to build native Win32 programs that rely on no 3rd party DLLs. Website also contains MSYS, a Minimal SYStem, a shell, with which a configure script could be executed.

DOS port of the GNU C/C++ compiler and tools; 32 bit, highly optimizing, up-to-date, and free (GPLed).

The project provides Win32-versions, native ports, of GNU tools or tools with a similar open source licence. Does not include compilers. Docs, downloads and links to related sites.

Native Win32 ports of some GNU utilities. Does not include compilers.

Toolkit suite of Unix and NT utilities for Windows, X Windows display environment, NutCracker development, interoperability, runtime environment.

Provides cross-platform interoperability applications, development kits, solutions and tools.

Implementation and subset of POSIX/Unix API for Win32 systems. Focus: efficiency, full platform coverage, with good support for low-end Win9x systems. Based on DJGPP runtime library by DJ Delorie. [Open Source, LGPL]

Recreates original Unix C shell and utilities fully from scratch, adds many enhancements, for Windows 95/98/Me/NT/2000/XP, OS/2.

U/WIN is software that lets Unix programs be recompiled and run on Win32 systems: Windows 95-98-Me/NT-2000-XP. Descriptions, documents, downloads.