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.

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

an easy way to collect one-time and recurring donations from your fans. 0% fees for creators and many more features!

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.

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.

adblock is one of the most popular ad blockers worldwide with more than 60 million users on chrome, safari, firefox, edge as well as android. use adblock to block all ads and pop ups. adblock can also be used to help protect your privacy by blocking trackers. adblock blocks ads on facebook, youtube, and all other websites. download it for free now!

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.

open source software which you can use to easily create a beautiful website, blog, or app.

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.