Pitivi

Pitivi (originally called PiTiVi) is an open-source, non-linear video editor for Linux developed by various contributors, with support also available from Collabora. It is licensed under the terms of ...
Language(s): Python (GTK+) / (initially in C)
Operating system(s): Linux
License: GNU LGPL

PyMOL

PyMOL is a user-sponsored molecular visualization system on an open-source foundation, maintained and distributed by Schrödinger. PyMOL is a commercial product, but we make most of its source code fre...
Language(s): C, C++, Python
Operating system(s): Linux, Mac OS, Unix, Windows
License: Python License

Robot Operating System (ROS)

The Robot Operating System (ROS) is a flexible framework for writing robot software. It is a collection of tools, libraries, and conventions that aim to simplify the task of creating complex and robus...
Language(s): C++, Python
Operating system(s): Linux, Mac OS
License: BSD license

SageMath

SageMath is a free open-source mathematics software system licensed under the GPL. It builds on top of many existing open-source packages: NumPy, SciPy, matplotlib, Sympy, Maxima, GAP, FLINT, R and ma...
Language(s): Python
Operating system(s): Linux, Mac OS, Windows, Solaris, Android, iOS
License: GPLv3

SciPy

SciPy (pronounced “Sigh Pie”) is a Python-based ecosystem of open-source software for mathematics, science, and engineering. In particular, these are some of the core packages: NumPy, SciPy library, M...
Language(s): Python, Fortran, C, C++
Operating system(s): Cross-platform
License: BSD-new license