the largest hacking and security conference with presentations, workshops, contests, villages and the premier capture the flag contest.

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.

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.

how hackers start their afternoon. hackernoon is a free platform with 25k+ contributing writers. 100m+ humans have visited hackernoon to learn about technology

wikiwand is the world's leading wikipedia reader for web and mobile.

open collective is a legal and financial toolbox for groups. it’s a fundraising + legal status + money management platform for your community. what do you want to do?