TDM-GCC is a compiler suite for Windows.

It combines the most recent stable release of the GCC toolset, a few patches for Windows-friendliness, and the free and open-source MinGW or MinGW-w64 runtime APIs to create an open-source alternative to Microsoft's compiler and platform SDK.

It can create 32-bit OR 64-bit binaries, for any version of Windows since Windows XP.

It has an easy-to-use single-file installer that creates a working installation with just a few clicks, and can update that installation when new packages become available.

It consists of command-line tools only. If you want a visual IDE (text editor, compiler interface, visual debugger), Code::Blocks integrates well with TDM-GCC.

TDM-GCC is a redistribution of components that are freely available elsewhere; as such, support for using TDM-GCC should generally be sought on the basis of the individual components in their respective forums.