MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
D3.js - D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS.
C++ - Has imperative, object-oriented and generic programming features, while also providing the facilities for low level memory manipulation
Chart.js - Easy, object oriented client side graphs for designers and developers.
D (Programming Language) - D is a language with C-like syntax and static typing.
Google Charts - Interactive charts for browsers and mobile devices.