MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Success Planner - Minimalist iOS/Android app to track daily tasks
GNU Octave - GNU Octave is a programming language for scientific computing.
Tactick - Keep track of your daily tasks.
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.
Freework - An easy way to keep track of your daily work