1. Scikit BuildImproved build system generator for CPython C, C++, Cython and Fortran extensions
3. MailerA light-weight, modular, message representation and mail delivery framework for Python.
5. PurerpcAsynchronous pure Python gRPC client and server implementation supporting asyncio, uvloop, curio and trio
6. Noteslet me know if my notes help you :D (it's a mess, I know)
7. DiojitFully compatible CPython jit compiler. Optimising Dynamic, Interpreted, and Object-oriented(DIO) programs.
8. Pythonvm RustAn incomplete stackless interpreter of Python bytecode, written in Rust.
12. PyrevitRapid Application Development (RAD) Environment for Autodesk Revit®
13. MaturinBuild and publish crates with pyo3, rust-cpython and cffi bindings as well as rust binaries as python packages
14. PytoPython IDE for iOS with NumPy, Matplotlib, Pandas, SciPy and SciKit-Learn