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Become a sponsor to Daniel Stenberg

Daniel Stenberg

Stockholm, Sweden

Hello friend!

You probably already know a bit about who I am and what I do, but I'll sum it up here if you're a new acquaintance!

I've been an active open source developer for 25 years. I live and work in Sweden. I have a wife and two kids. (Yeah, so I'm an old guy really.)

I work primarily on curl. The project I founded in 1998 and in which I am still the lead developer. With its estimated ten billion installations world-wide, it is one of the most widely used software components ever.

Almost everything I do is focused on curl. Sometimes I reach out and do things in neighboring projects to ensure that curl runs smoother and better. Like libssh2, c-ares and my book projects everything curl, http2 explained and HTTP/3 explained.

Sponsorships to me will help me continue working on open source software, open networking standard protocols and producing open and freely available documentation of such software and protocols.

83 sponsors are funding bagder’s work.


Featured work

  1. curl/curl

    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…

  2. curl/doh

    stand-alone application for DoH (DNS-over-HTTPS) name resolves and lookups

  3. bagder/http3-explained

    A document describing the HTTP/3 and QUIC protocols

  4. bagder/libcurl-video-tutorials

    Video tutorials for how to write internet clients using libcurl

  5. bagder/everything-curl

    The book documenting the curl project, the curl tool, libcurl and everything related to this.

    Perl 994
  6. bagder/http2-explained

    A detailed document explaining and documenting HTTP/2, the successor to the widely popular HTTP/1.1 protocol

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$5 a month


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$6 a month


You are an awesome sponsor offering just a tad bit more.

$25 a month


You're a hero.

$100 a month


Mentioned and acknowledged as personal Patreon. The cream of the cream!

$1,000 a month