clipboard.js - clipboard.js provides an approach to copy text to the clipboard with No Flash and No frameworks.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
CALCONIC_ - Build & add interactive calculators to your website! Choose from more than 50 premade calculators or build your own from scratch. No coding required. Free plan available. Zapier Integration. Publish Anywhere.
GNU Octave - GNU Octave is a programming language for scientific computing.
Fancybox - fancyapps.com - Fancy App Store
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.