CMDebug is a 32-bit or 64-bit GUI application.

 

TCC-RT is a 32-bit or 64-bit console (character-mode) application.

 

Both are designed to run under Windows 8, 2012, 10, 2016, and 2019.

 

The 32-bit and 64-bit versions of CMDebug are identical in features. The CMDebug installer will automatically choose the appropriate version for your version of Windows.