Client URL Request Library (cURL) is an open source project that produces two products; both of which have to be installed on your web server in order to host the i2b2 Administration Module and Web Client. If you have version 1803 or later of Windows 10, cURL command line tool is installed by default. php versions of 5.0 and later have cURL lib support .
1. Command line tool for transferring data with URL syntax.