HTTP Debugger icon
HTTP Debugger icon

HTTP Debugger

HTTP Debugger captures and decrypts HTTP/HTTPS from any Windows app without proxy setup — HTTP/2, WebSocket, SSE, gRPC and localhost included. Edit and replay requests, modify traffic on the fly, and let an AI assistant read the session over the built-in MCP server.

Live capture of AI agent and browser traffic with WebSocket messages

Cost / License

  • Pay once
  • Proprietary

Application type

Platforms

  • Windows
Localhost and 127.0.0.1 traffic captured without loopback workarounds
Incoming requests to a web server running on the same machine
+2
One-click local root certificate install for HTTPS inspection
Alternatives  
8likes
45alternatives
0articles

Features

  1.  Website Monitoring
  2.  Ad-free
  3.  No registration required
  4.  No Tracking
  5.  Dark Mode
  6.  Web page Debugging
  7.  HTTP(S) Debugging
  8.  HTTP Monitoring

 Tags

HTTP Debugger News & Activities

Highlights All activities

Recent activities

HTTP Debugger information

  • Developed by

    Unknown

  • Licensing

    Proprietary and Commercial product.

  • Pricing

    One time purchase (perpetual license) that costs $129.

  • Alternatives

    45 alternatives listed

  • Badge

    Get an embeddable badge for HTTP Debugger

  • Supported Languages

    • English

AlternativeTo Categories

Network & Admin, Development

Popular alternatives

View all
HTTP Debugger was added to AlternativeTo by Pkhach on and this page was last updated .
No comments or reviews, maybe you want to be first?

Official Links

What is HTTP Debugger?

HTTP Debugger Pro captures and decrypts HTTP/HTTPS traffic on Windows at the system level, without a proxy. It does not change proxy settings, does not open ports and does not add browser extensions.

With HTTP Debugger you can see: • HTTP traffic from desktop apps written in C++, .NET, Java or Electron, Windows services, CLI tools and AI agents • Traffic from apps that ignore proxy settings • localhost and 127.0.0.1 loopback traffic • Incoming requests to web servers running on the same machine • Traffic inside VPN tunnels and behind corporate proxies • Connections opened before capture started • Detailed connection tree view for HTTP/2

Message-level detail for: • WebSocket (including over HTTP/2) • Server-Sent Events • gRPC

HTTPS decryption uses a local root certificate installed in one click. Certificate-pinned connections pass through untouched instead of breaking.

Beyond inspection: • Modify request and response headers with rules and regular expressions • Auto-Reply: mock responses from local files, fixtures or error codes • Redirect hosts and TCP endpoints • Edit any captured request and send it again • Filter and highlight by URL, process or IP • Keep a separate set of rules per project or environment and switch between them in one click • Import sessions from HAR and SAZ files, and AutoResponder and filter rules from Fiddler Classic • Export to Excel, XML, JSON, CSV, TSV, TXT or HTML report

Built-in MCP server for AI assistants: • Claude Code, Codex or any MCP-compatible assistant can work with the captured session — list and search transactions, inspect request and response details, list endpoints, read session stats, export a request as cURL, or diagnose why the capture is empty • Off by default and opt-in; it runs over a local named pipe, so the session never leaves the machine

Supported platforms: Windows 10 and 11

Licensing: $129 one-time perpetual license for one machine, optional $89/year maintenance for updates. No registration, fully functional 7-day trial.

Windows native application, 12 MB installer — no Java, no .NET, no bundled Electron or browser engine.

Developed since 2007.