curl logo

command line tool and library
for transferring data with URLs


DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, 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. The curl project follows well established open source best practises.

What's the latest curl?

The most recent stable version is 7.50.3, released on 14th of September 2016. Currently, 107 of the listed downloads are of the latest version.

Where's the code?

Check out the latest source code from github.

Subjects of interest

curl meeting in Germany, March 2017

On the weekend of March 18-19, 2017, the first ever curl meeting is taking place is Nuremberg, Germany.

Users, developers, binding authors, application authors, curl maintainers, libcurl hackers and other people with a curl interest are welcome!

Everything curl

This is a detailed and totally free book, available in ebook formats, PDF and online 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.