Open Source supporter and developer since the mid 1990s. My code is almost guaranteed to run in your devices, in one way or another. I work exclusively on Open Source since many years.

I founded and lead the development of the curl project and I do spurious contributions in other network related projects like libssh2, c-ares and trurl.

I have authored the following books: Uncurled, everything curl, HTTP/3 explained and http2 explained.

File issues and pull-requests in any and all of the projects I participate in. Contact me via email at daniel@haxx.se on Mastodon or IRC in the #curl channel on libera.chat.

Everything about me and my projects are also available on my website.

🏆 European Open Source Achievement Award 2025 | 🌟 GitHub star | 🏆 Polhem Prize | 🏆 Microsoft MVP | 🏆 5 x Google Open Source Peer Bonus | 🏆 Nordic Free Sofware Award | 🏆 Google Patch Award | 🏆 Sweden's 2nd best Developer