Mutable Instruments' "Breadboard Friends" schematics and boards in Kicad flavour.
If you plan to have fun in developing eurorack modules (but also audio in general) prototypes using breadboard, probably You'll find these project very usefull.
Here converted as Kicad projects:
https://git.lattuga.net/incandenza/bbf_kicad/src/master
take a look to README.md on repository for more infos