GCC stands for GNU compiler collection. There are precompiled versions / binaries of the GCC for windows available here.

Gcc for Windows (gcw) is yet another attempt to port gcc to Win32 platform. The major difference from MinGw and Cygwin is maximum possible acceptance of Microsoft Visual C++ source code and intended binary compatibility with Microsoft Visual C++.

Get GCC for Windows [GCW] 16 KB

Also check out : GCC for Microsoft Windows:

• The Cygwin project;
• The MinGW project.