since 1983, developing the free unix style operating system gnu, so that computer users can have the freedom to share and improve the software they use.

free digital tools for class activities, graphing, geometry, collaborative whiteboard and more

github is where over 100 million developers shape the future of software, together. contribute to the open source community, manage your git repositories, review code like a pro, track bugs and features, power your ci/cd and devops workflows, and secure code before you commit it.

why scipy? fundamental algorithms. broadly applicable. foundational. interoperable. performant. open source.

gimp - the gnu image manipulation program: the free and open source image editor

onworks free hosting provider that allows to run your workstations linux online, windows online emulator or macos online emulator only using your web browser.

online binary converter. supports all types of variables, including single and double precision ieee754 numbers

a gallery of the most interesting jupyter notebooks online.

compile various programming languages online. add input stream, save output, add notes and tags.