No specific info about version 4.0. Please visit the main page of HttpMaster on Software Informer.
Create end-to-end tests on REST and SOAP APIs, and other web services.
Style Master is a wonderful CSS editor with many features.
Web-Sniffer can be used to generate GET, POST and HEAD requests.
Kimono for desktop allows you to turn websites into structured APIs.
It's a HTTP load generation tool which measure the performance of a web server .
Delphi Application Peeper - run-time debugging, testing of your applications.