You use CURL (a command-line tool) for transferring data specified with URL syntax. It supports various protocols, including HTTP, HTTPS, FTP, FTPS, SFTP, LDAP, TELNET, SMTP, IMAP, and many more. CURL is typically used to troubleshoot network connectivity issues or check server response times. It is available for Windows, macOS, and Linux. It is open-source software released under the MIT license. CURL is included in most package managers, such as apt on Debian-based systems or Homebrew on macOS.
CURL is not affiliated with any company or website but is maintained by a group of volunteers. CURL provides various options that can be used along with the basic format to transfer data from or to a server.