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HTTP Debugger

SaaS

HTTP Debugger captures, inspects, and replays HTTP/HTTPS traffic from Windows apps without changing proxy settings.

httpdebugger.com
HTTP Debugger homepage screenshot

About HTTP Debugger

HTTP Debugger is a Windows traffic analyzer that captures, inspects, and replays HTTP/HTTPS traffic from browsers, desktop apps, services, Java and .NET clients, and local servers without changing proxy settings. It supports HTTP/2, WebSocket, Server-Sent Events, and gRPC messages. The tool is used by thousands of companies and has been available since 2007.

Key features

  • Captures HTTP and HTTPS requests system-wide without proxy setup
  • Inspects headers, bodies, cookies, JSON/XML, HTTP/2 details, WebSocket frames, Server-Sent Events, and gRPC messages
  • Replays and modifies HTTP sessions, simulates server responses, rewrites HTTP headers, and redirects TCP connections
  • Captures and analyzes AI agent traffic streams over WebSocket, SSE, gRPC, and HTTP/2
  • Ships an MCP server for AI agents to read and analyze captured traffic
  • Offers Excel export capacity

Good fit for

  • Debugging HTTP API calls between apps and backends
  • Testing microcontrollers in IoT architectures
  • Debugging OAuth web requests
Tags
http debugging
traffic analysis
api testing
windows
web development
network monitoring

HTTP Debugger: questions and answers

What is HTTP Debugger used for?
HTTP Debugger captures, inspects, and replays HTTP/HTTPS traffic from Windows apps without changing proxy settings. It is a good fit for debugging HTTP API calls between apps and backends, testing microcontrollers in IoT architectures, and debugging OAuth web requests.
Is HTTP Debugger open source?
No. HTTP Debugger is proprietary (closed-source) software. In the Developer Tools category, open-source options include Ventoy, Rufus and Notepad++.
What are some alternatives to HTTP Debugger?
HTTP Debugger competes with Fiddler, Proxyman and Charles Proxy.

Open-source alternatives to HTTP Debugger

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