libcurl

 libcurl is a free and easy-to-use client-side URL transfer library, supporting
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
and TFTP. libcurl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading,
HTTP form based upload, proxies, HTTP/2, HTTP/3, cookies, user+password
authentication (Basic, Digest, NTLM, Negotiate, Kerberos), file transfer resume,
http proxy tunneling and more!

libcurl is highly portable, it builds and works identically on numerous
platforms, including Solaris, NetBSD, FreeBSD, OpenBSD, Darwin, HPUX, IRIX, AIX,
Tru64, Linux, UnixWare, HURD, Windows, Amiga, OS/2, BeOs, Mac OS X, Ultrix, QNX,
OpenVMS, RISC OS, Novell NetWare, DOS and more... 

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20th July 2023
Updated to 8.2.0. Built against OpenSSL v3
Thanks to Oliver Roberts for many recent contributions

24th October 2021
Updated to 7.79.1

10th August 2019
Updated to 7.65.3

5th July 2018
Updated to 7.60.0

8th Jan 2016
Updated to 7.46.0
Thanks to Jörg Strohmayer & kas1e for threaded resolver fixes.

5th Nov 2014
Updated to 7.39.0