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 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.

bitbucket cloud is a git-based code and ci/cd tool optimized for teams using jira.

miro is a visual workspace for innovation where teams manage projects, design products, and build the future together. join 60m+ users from around the world.

make the impossible, possible with trello. the ultimate teamwork project management tool. start up a board in seconds, automate tedious tasks, and collaborate anywhere, even on mobile.

well organized and easy to understand web building tutorials with lots of examples of how to use html, css, javascript, sql, python, php, bootstrap, java, xml and more.

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.

go from imagining the future to building it. log in to access lucidchart for intelligent diagramming or lucidspark for virtual whiteboarding. teams can collaborate, ideate, and build projects in real time.

collaborate for free with online versions of microsoft word, powerpoint, excel, and onenote. save documents, workbooks, and presentations online, in onedrive. share them with others and work together at the same time.

in-depth, to-the-point tutorials on java, spring, spring boot, security, and rest.