Curl is a tool and libcurl is a library for transferring data with URL syntax, supporting FTP, FTPS, HTTP, HTTPS, TFTP, SCP, SFTP, TELNET, DICT, LDAP. LDAPS, FILE, IMAP, SMTP, POP3, RTSP and RTMP. libcurl offers a myriad of powerful features

curl logo CII Best Practices

Curl is a command-line tool for transferring data specified with URL syntax. Find out how to use curl by reading the curl.1 man page or the MANUAL document. Find out how to install Curl by reading the INSTALL document.

libcurl is the library curl is using to do its job. It is readily available to be used by your software. Read the libcurl.3 man page to learn how!

You find answers to the most frequent questions we get in the FAQ document.

Study the COPYING file for distribution terms and similar. If you distribute curl binaries or other binaries that involve libcurl, you might enjoy the LICENSE-MIXING document.


If you have problems, questions, ideas or suggestions, please contact us by posting to a suitable mailing list.

All contributors to the project are listed in the THANKS document.


Visit the curl web site for the latest news and downloads.


To download the very latest source off the Git server do this:

git clone

(you’ll get a directory named curl created, filled with the source code)


Curl contains pieces of source code that is Copyright © 1998, 1999 Kungliga Tekniska Högskolan. This notice is included here to comply with the distribution terms.

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