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command line tool and library
for transferring data with URLs

Welcome to curl up 2019

In March 29-31 2019, we gather curl fans from all over the world and talk Internet protocols, curl and related subjects on the annual curl meetup. This time in Prague, Czech Republic.

All info and sign-up


DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, Telnet and TFTP. curl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, HTTP/2, cookies, user+password authentication (Basic, Plain, Digest, CRAM-MD5, NTLM, Negotiate and Kerberos), file transfer resume, proxy tunneling and more.

What's curl used for?

curl is used in command lines or scripts to transfer data. It is also used in cars, television sets, routers, printers, audio equipment, mobile phones, tablets, settop boxes, media players and is the internet transfer backbone for thousands of software applications affecting billions of humans daily.

Who makes curl?

curl is free and open source software and exists thanks to thousands of contributors and our awesome sponsors. The curl project follows well established open source best practices. You too can help us improve!

What's the latest curl?

The most recent stable version is 7.63.0, released on 12th of December 2018. Currently, 46 of the listed downloads are of the latest version.

Where's the code?

Check out the latest source code from github.

Everything curl

Everything curl book cover

Everything curl is a detailed and totally free book available in several formats, that explains basically everything there is to know about curl, libcurl and the associated project.

Learn how to use curl. How to use libcurl. How to build them from source or perhaps how the curl project accepts contributions. There's something for everyone in this, from the casual first-time users to the experienced libcurl hackers.

Everything curl is itself an open project that accepts your contributions and help.