stack overflow is the largest, most trusted online community for developers to learn, share​ ​their programming ​knowledge, and build their careers.

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.

the best site for c and c++ programming. popular, beginner-friendly c and c++ tutorials to help you become an expert!

записки программиста: блог о программировании, а также электронике, радио, и всяком таком

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.

a computer science portal for geeks. it contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview questions.

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