”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.
curl 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. ”
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