cURL is a tool for getting files from HTTP, FTP, FILE, LDAP, LDAPS,
DICT, TELNET and TFTP servers, using any of the supported protocols.
cURL is designed to work without user interaction or any kind of
interactivity. cURL offers many useful capabilities, like proxy
support, user authentication, FTP upload, HTTP post, and file transfer
resume.

This is the MinGW cross-compiled Windows library.