Similar to Psyco

BitBake

Bitmessage

Calamares (software)

Calibre (software)

Celery (software)

Ceph (software)

CherryPy

Cryptomatte

Deluge (software)

Exaile

Flowblade

FreeCAD

FreeIPA

Genshi (templating language)

GNOME SoundConverter

GNU Mailman

GRPC

Gunicorn

Intelligent Input Bus

InterPlanetary File System

IPython

Jinja (template engine)

Kivy (framework)

Matplotlib

MayaVi

Meson (software)

Miro (video software)

Mnemosyne (software)