MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
GNU Octave - GNU Octave is a programming language for scientific computing.
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.
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.
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.