Curl wiki:
>This article is about the cURL command line tool. There is also an unrelated Curl programming language and the math term Curl. cURL is a command line tool for transferring files with URL syntax, supporting FTP, FTPS, HTTP, HTTPS, Gopher, Telnet, DICT, FILE and LDAP. cURL supports HTTPS certificates, HTTP POST, HTTP PUT, FTP uploading, Kerberos, HTTP form based upload, proxies, cookies, user+password authentication, file transfer resume, http proxy tunneling and many other features. cURL is open source/free software distributed under MIT License.
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