Linux

OpenJDK is a free and open-source development environment for Java platform implementation where you can build, run, or deploy Java applications on desktops, servers, and embedded systems without any licensing costs.

OpenGL is a cross-platform API for rendering 2D and 3D vector graphics, providing a set of functions to create complex visual scenes, manage shaders, handle textures and lighting and deliver smooth, high-performance graphics across devices.

OpenOffice is an office suite developed by Apache, which offers tools similar to Microsoft Office (including word processing, spreadsheets, presentations, and databases).