itch.io - An online game marketplace and community.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
GOG.com - DRM-free game store, selling both new and old titles. No clients required.
GNU Octave - GNU Octave is a programming language for scientific computing.
Ubisoft Club - Ubisoft Club app enables you to get updates about your favorite games timely.
Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.