There was a long stretch of time for which the only full-time developer working on Python (cPython) upstream was a Red Hat employee. The other core devs were ei

There was a long stretch of time for which the only full-time developer working on Python (cPython) upstream was a Red Hat employee. The other core devs were either working in their free time or with their employers sponsoring only a few hours a week. https://discuss.python.org/t/official-list-of-core-developers/924 https://discuss.python.org/t/official-list-of-core-developer... I believe Microsoft has been sponsoring a lot of work for the past year or so, so I doubt that is still the case. Red Hat has been probably the biggest contributor to GCC for a very long time and contributes to LLVM/clang as well. Beyond the kernel - glibc has a lot of RH maintenance work, Grub2, wayland, Xorg, Gnome, Gtk, pipewire, systemd. etc.