A Software system for Computer algebra

EigenMath manual

Kevin's Carbide and halgebra. See facebook convo. https://ideapad.io/augmenting-human-intellect/graph

Ket algebra editor

–>http://epsilonwriter.com/start.php <–

Mathematica - Manipulation equations

http://matracas.org/algebra/index.html.en

https://github.com/MatthewJA/Graphical-Equation-Manipulator

JavaScript mathematics packages

http://www.sympy.org/en/index.html