* [OpenCV](http://opencv.org/) (> 3.0.0, 3-clause BSD License).
**OpenCV** implements basic computer vision algorithms, linear algebra, image/video manipulation, and GUI.
  * Windows: https://learnopencv.com/install-opencv-on-windows/
  * Linux and Unix: https://docs.opencv.org/4.x/d7/d9f/tutorial_linux_install.html