cURL is a command-line tool and library for transferring data with URLs. It supports many protocols such as HTTP, HTTPS, FTP, FTPS, SCP, SFTP, TFTP, LDAP, DICT, TELNET, FILE, IMAP, POP3, SMTP and RTSP. It is used to automate data transfers, website interactions, and file uploads/downloads. It can be used to transfer files between different systems, as well as to programmatically download web pages and other online content. It is an ideal tool for scripting and automation, and can be used to build custom applications. cURL is a highly versatile and powerful tool that can be used for a variety of tasks.
Like cURL, HTTPie also has JSON support, but HTTPie reduces the syntax by omitting the header syntax. This makes a test call to an API easier to remember. Avoiding time spent reviewing a document. For example: $ http POST https://api.ctl.io/v2/authentication/login 'username = YOUR.USERNAME' 'password = YOUR.PASSWORD' A similar call using cURL requires header syntax.