Reqable

It combines a man‑in‑the‑middle proxy with a full‑featured REST client, allowing developers to capture, inspect, and modify HTTP(S) traffic across multiple protocols—including HTTP/1.x, HTTP/2, HTTP/3, WebSocket, and SOCKS4/5. The proxy can decode TLS versions up to 1.3 and supports traffic filtering by application, domain, data type, and custom search conditions, making it easy to locate specific requests in large streams.

From captured traffic users can generate REST API calls, edit query parameters, headers, bodies, and authorization, and run tests directly within the interface. Built‑in diff tools visualize differences between request and response payloads, while rewrite rules, breakpoints, and Python scripting enable automated manipulation of traffic for complex testing scenarios.

The desktop application runs on Windows, macOS, and Linux, and mobile traffic can be forwarded without a Wi‑Fi proxy for seamless desktop‑mobile collaboration. It offers theme customization, multiple accent and syntax‑highlighting options, and supports import/export of collections in formats such as cURL, HAR, and Postman.