There are 1 repository under nxdk topic.
GPU-accelerated graphics samples for original Xbox using nxdk and xgu
Copy of libcxx git repository located at http://llvm.org/git/libcxx (adapted for original Xbox / nxdk toolchain)
A multi-platform C++ game made using SDL and ported to Windows,Mac,Linux,Nintendo Switch,Xbox using Homebrew SDK nxdk and devkitpro