ImageMagick - ImageMagick is a software suite to create, edit, and compose bitmap images.
python pillow - The friendly PIL fork (Python Imaging Library). Contribute to python-pillow/Pillow development by creating an account on GitHub.
OpenCV - OpenCV is the world's biggest computer vision library
Cloudinary - Cloudinary is a cloud-based service for hosting videos and images designed specifically with the needs of web and mobile developers in mind.
pgmagick - Yet Another Python wrapper for GraphicsMagick
FFmpeg - Open source multimedia suite for conversion, playback, profiling, and streaming.