curl Menu Download Download overview Browse source Changelog Release candidates Release log tiny-curl Documentation Documentation overview Project FAQ Help us Known bugs Known risks TODO Protocols CA bundle HTTP Cookies SSL Certs Releases Release log Version numbers Security curl CVEs Vulnerability table curl tool man page Tutorial HTTP scripting trurl wcurl Videos Who and Why libcurl libcurl overview API Examples Features Mailing list Symbols Using libcurl Tutorial Get Help Get Help overview curl-library curl-users IRC / chat Mailing lists Everything curl [book] Video presentations Report a bug Report security issue Paid support Development Development overview Autobuilds Code review Code style Contribute Dashboard Dependencies Deprecate Release Notes Release Procedure Roadmap Run Tests Specifications Test curl Tests Overview Vulnerability Disclosure Policy command line tool and library for transferring data with URLs Top Sponsors Commercial support available Everything curl is a free ebook about curl and libcurl Sponsor curl financially Video: mastering the curl command line tool What is curl used for? curl is used in command lines or scripts to transfer data. curl is also libcurl, 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 countless software applications in over twenty billion installations. curl is used daily by virtually every Internet-using human on the globe. curl supports Protocols DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, MQTTS, POP3, POP3S, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS, WSS Proxies SOCKS4, SOCKS5, HTTP, HTTPS (HTTP/1 and HTTP/2), tunneling, via unix domain sockets, haproxy, SOCKS+HTTP proxy chain HTTP GET, POST, PUT, HEAD, multipart formpost, HTTP/0.9, HTTP/1.0, HTTP/1.1, HTTP/2 (h2c, h2, prior knowledge), HTTP/3 (dual connect h1/h2 + h3 or h3-only), HSTS, Alt-Svc, cookies, PSL, etags, transfer compression, ranges, custom headers, custom method, follow redirects FTP IPv6 (EPRT, EPSV), STLS, upload/download, append, range, passive/active, kerberos, directory listing, custom commands SCP + SFTP known hosts, md5/sha256 fingerprint, compression, upload/download, directory listing TLS 1.0 - 1.3, mutual authentication, STARTTLS, OCSP stapling, ECH, False Start, key pinning, PQC ready, session resumption, early data, export/import sessions QUIC 0RTT handshakes Auth Basic, Plain, Digest, CRAM-MD5, SCRAM-SHA, NTLM, Negotiate, Kerberos, Bearer tokens, AWS Sigv4, SASL, .netrc HTTP compression gzip, brotli and zstd Name resolving DNS-over-HTTPS, custom address for host, name+port redirect, custom DNS servers, DNS caching, HTTPS RR Connection connection reuse, Interface binding, Happy Eyeballs, IPv4/IPv6-only, unix domain sockets, TCP keepalive, TCP Fast Open, TCP Nodelay, MPTCP, VLAN priority, IP Type Of Service Transfers transfer rate limiting, request rate limiting, stall detection, retries, timeouts URLs Unlimited amount, parallel and serial transfers, globbing Output IDN hostnames, custom info from transfer, metadata as JSON, per content-disposition, libcurl source code, bold headers 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 is the latest curl? The most recent stable version is 8.21.0, released on 2026-06-24. Currently, 110 of the listed downloads are of the latest version. Where is the code? Check out the latest source code from GitHub.