Guile[1], Octave[2], Guix[3] and GRUB[4] have nice designs too.
[1]: https://gnu.org/software/guile/
[2]: https://gnu.org/software/octave/
Aw, Octave?
/me blushes
[1]: https://gnu.org/software/guile/
[2]: https://gnu.org/software/octave/
/me blushes
Joking aside, looks really nice!