Winsoft WinInet Component Suite v4.1 for Delphi/C++ Builder 5 - 10.3 Full Source

Delphi and C++ Builder components to enable applications interact with FTP, and HTTP/HTTPS protocols to access Internet resources.

FTP, HTTP and HTTPS protocols supported
well suited for accessing REST services
uses standard Windows WinINet API
available for Delphi/C++ Builder 5 - 10.3 and Lazarus 1.8.4
source code included in registered version
royalty free distribution