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Hi, I'm Daniel!

I am and have been an avid 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 and c-ares.

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 on twitter at @bagder or on IRC in the #curl channel on

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

🌟 GitHub star | 🏆 Polhem Prize | 🏆 Nordic Free Sofware Award | 🏆 Google Patch Award | 🏆 Sweden's 2nd best Developer


  1. curl/curl Public

    A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP…

    C 26.8k 5.3k

  2. The book documenting the curl project, the curl tool, libcurl and more. Simply put: everything curl.

    Perl 1.6k 282

  3. log Public

    Daniel's weekly report of what he's been up to and might do next!


  4. uncurled Public

    Uncurled - everything I know and learned about running and maintaining Open Source projects for three decades.

    Python 425 39

3,042 contributions in the last year

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