GNU Debugger

View patches

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git

GNU C Library (glibc)

View patches

http://www.gnu.org/software/libc/libc.html

https://sourceware.org/git/?p=glibc.git

GNU Guix

View patches

http://git.savannah.gnu.org/cgit/guix.git

The ABI analysis library (libabigail)

View patches

https://sourceware.org/libabigail/

https://sourceware.org/git/?p=libabigail.git