instructables is a community for people who like to make things. come explore, share, and make your next project with us!

hackthissite.org is a free, safe and legal training ground for hackers to test and expand their ethical hacking skills with challenges, ctfs, and more.

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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.

reporting on the technology, security, and privacy since 2005.

open source home automation that puts local control and privacy first. powered by a worldwide community of tinkerers and diy enthusiasts. perfect to run on a...

make: celebrates your right to tweak, hack, and bend any technology to your will.

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

sourceforge provides free & fast open source software downloads and development, and business software reviews and comparisons featuring the largest open source and business software directory.