Mingw-w64 is an advancement of the original mingw.org project, created to support the GCC compiler on Windows systems. It has forked it in 2007 in order to provide support for 64 bits and new APIs. It has since then gained widespread use and distribution.
The development and community are very active and welcoming with new contributors every month and simple installers.
You can also look at the full list of versions.
Mingw-w64 interacts a lot with other projects in order to help everyone move forward. Contributions have been going to and coming from these projects:
include/wincon.h: Add new PeusoConsole APIs for Windows 10 RS5
ComPtr.Attach() should not increase ref count
See windows sdk's client.h.
winpthreads can deadlock if pthread_cond_signal is called outside of the mutex lock
ntdllcrt: Use separated import library for ntdll.dll C runtime exports.
move _fseeki64 and _ftelli64 functions from libmingwex to libmsvcrt
This file not contain filter/rresamp.c source code, that has just updated recently
help me to build liquid-dsp project on Windows with mingw
Build Failure with Boost 1.68 Using GCC 8.2.1 and MinGW-w64 (Windows, _WIN32_WINNT=0xA00)