Thunder Client is described as 'hand-crafted lightweight Http Client extension for Visual Studio Code. No separate download needed, Just install the extension from VS Code marketplace'. There are more than 50 alternatives to Thunder Client for a variety of platforms, including Mac, Windows, Linux, Online / Web-based and SaaS. The best alternative is Insomnia REST Client, which is both free and Open Source. Other great apps like Thunder Client are Postman (Freemium), HTTPie (Free, Open Source), Paw (Paid) and soapUI (Free, Open Source).
Postman is a tool that facilitates the development and use of APIs. Postman provides all the functionality needed to create or simulate API specifications and use the Postman Collection Runner to create tests.
Easily craft your HTTP requests, try them, archive them. Setup HTTP Headers, URL parameters, form-encoded POST key-values or text. Get easy-to-read responses with well formatted headers and body. Sync your projects with your team through Paw for Teams.
Hoppscotch is an open-source API request builder. It helps you create your requests faster, saving you precious time on your development. Features ? ?? Lightweight: Crafted with minimalistic UI design. ?? Fast: Send requests and get/copy responses in real-time.