Pure Python FFmpeg-based live video / audio streaming to YouTube, Facebook, Periscope, Twitch, and more
Fast and simple filesystem and path manipulation library. OS, compiler, platform agnostic. Interfaces for C, C++, and Fortran.
write animated GIF, multipage append TIFF, AVI OGV video in Python
Python asyncio + aiohttp Markdown *.md URL link checker: 10,000 files/second
Performance benchmarks of Python, Numpy, etc. vs. other languages such as Matlab, Julia, Fortran.