libcurl is an easy-to-use client-side URL transfer library, supporting DICT,
 FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S,
 RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, TELNET and TFTP.
 .
 libcurl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP
 form based upload, proxies, cookies, user+password authentication (Basic,
 Digest, NTLM, Negotiate, Kerberos), file transfer resume, http proxy tunneling
 and more!
 .
 libcurl is free, thread-safe, IPv6 compatible, feature rich, well supported,
 fast, thoroughly documented and is already used by many known, big and
 successful companies and numerous applications.
 .
 SSL support is provided by GnuTLS.