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command line tool and library
for transferring data with URLs
(since 1998)

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Supports...

DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. curl supports TLS certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies (SOCKS4, SOCKS5, HTTP and HTTPS), HTTP/2, HTTP/3, cookies, user+password authentication (Basic, Plain, Digest, CRAM-MD5, SCRAM-SHA, NTLM, Negotiate, Kerberos, Bearer tokens and AWS Sigv4), file transfer resume, proxy tunneling, HSTS, Alt-Svc, unix domain sockets, HTTP compression (gzip, brotli and zstd), etags, parallel transfers, DNS-over-HTTPS and more.

What's curl used for?

curl is used in command lines or scripts to transfer data. curl is also used in cars, television sets, routers, printers, audio equipment, mobile phones, tablets, medical devices, settop boxes, computer games, media players and is the Internet transfer engine for thousands of software applications in over twenty billion installations.

curl is used daily by virtually every Internet-using human on the globe.

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 8.8.0, released on 2024-05-22. Currently, 102 of the listed downloads are of the latest version.

Where's the code?

Check out the latest source code from GitHub.

How do you use curl?

A more than three hours deep dive video tutoral in how to use and make the best of curl on the command line.