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

github is where over 65 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.

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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.

biggest online tutorials library - the best content on latest technologies including c, c++, java, python, php, machine learning, data science, appml, ai with python, behave, java16, spacy.

social network for developers to discuss topics about bugs and issues, write and share knowledge and connect with millions of developers worldwide.