An answer to Is there any source which tabulates quantum computing algorithms for simulating physical systems? mentions the Quantum Algorithm Zoo, a list of quantum algorithms. Several answers to Programming quantum computers for non-physics majors include links to different kinds of development kits. Likewise, What programming languages are available for quantum computers? gathers a couple of good attempts at listing those.
The present question is related to the above, and yet it's not answered by the above resources.
Does a complete list of open quantum software projects exist?
Ideal answers would be: if it exists, the link to said list, and if it doesn't, a (well-formatted) as-exhaustive-as-possible compilation of open quantum software projects.
Related question: Are there any quantum software startups?