Arduino is an open-source Hardware, Software, and IoT community of developers and creators.

The MetaBrainz Foundation is a non-profit that believes in free, open access to data. Our goal is to build community maintained databases using open source software and make them available under Creative Commons licenses.

2.6万以上の月間読者がいる『Railsガイド』，筑波大学や琉球大学などで採用された『Railsチュートリアル』，全国205ヶ所以上ある CoderDojo のWebサイト『coderdojo.jp』を開発しています.

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A tinkerer at heart with a passion for solving complex problems with beautiful solutions

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Haskell Developer ★ @kowainik open-source organisation Co-Creator ★ @bindthegap editor ★ Creator and maintainer of the number of #Haskell libraries and tools ★ FP enthusiast

Creator of React Styleguidist, Mrm, and Jest cheat sheet; blogger, and component-driven development avocado.

Dimforge is a French open-source company based in France created in 2020 by @sebcrozet. It aims to empower the Rust community with efficient, high-quality linear-algebra and physics simulation libraries for games, robotics, and animation.

Hi! I'm Jeremy Rubin, and I work on making Bitcoin excellent!

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Pi-hole is creating a network-wide ad blocker and tracking filter.

We're making open products with students worldwide and sharing what we learn along the way! We’re making open educational content for learners around the world and creating programs for students to practice open-source software development.

Support random nerd's increasing alcohol consum while working on various open source projects

Support our Portmaster development directly!

Support the development of the free and open-source reference manager JabRef

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I'm a Python core developer, Steering Council member and release manager of Python 3.10 and 3.11. Help me making Python better for everyone!

Plyint LLC (https://plyint.com) is a remote-first, podular software company creating open source friendly products.

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Hey there! I'm a 19-year-old maker who spends their free time building cool projects on the internet.

rkyv supports the development and maintenance of rkyv, a zero-copy deserialization framework for Rust, and other projects that support and extend it.

I'm a Julia software developer specializing in graphics programming and game development.