The Code Peer Review Application for The Crypto Project
pyOpenSci's guidebook for package authors, reviewers, and editors
Programming for Everybody (Python) by Charles Severance
A community effort to develop an open standard library for Medical Physics in Python. Building quality transparent software together via peer review and open source distribution. Open code is better science.
The Python implementation of the libp2p networking stack [under development]
ComPAIR: a peer review application pairing student answers for deeper learning through comparison of peer work
Free software that works great, and also happens to be open-source Python.