DA-RestClient – Simple REST API Testing

DA-RestClient is a lightweight desktop application for testing REST API endpoints. Create and send HTTP requests, inspect status codes, headers and response bodies, and automatically format JSON responses.

Requests are stored as simple .rest text files inside regular folders. There are no proprietary project formats or databases. Your files remain easy to read, edit, copy and manage with version control systems such as Git.

DA-RestClient with a REST request and the formatted response

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Freeware:

Key features

  • Support for GET, POST, PUT, PATCH and DELETE requests
  • Headers, query parameters and request bodies
  • Formatted JSON responses
  • Clear display of HTTP status, headers and body
  • Simple folder-based project organization
  • Automatic saving of requests
  • Git-friendly .rest text files
  • Small native application without large frameworks
  • Free to use

A request can be as simple as:

GET https://example.com/api/items
Accept: application/json

Open a project folder, select or create a .rest file and press F5 to send the request. The response is displayed directly below the request editor.

DA-RestClient project folders shown in the application and in Windows Explorer

DA-RestClient is designed for developers, testers and administrators who want a straightforward tool for quick API checks – without accounts, cloud storage or unnecessary complexity.