MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
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.
C++ - Has imperative, object-oriented and generic programming features, while also providing the facilities for low level memory manipulation
Modelio - Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.
D (Programming Language) - D is a language with C-like syntax and static typing.
Visual Paradigm - Looking for an affordable software with Enterprise Architecture tool, PMBOK tool, UML tool, Agile tool, BPMN tool and UX tool? Read this page for details.