HTTP Debugger Free v10.0
Free HTTP sniffer for developers and DevOps
View and analyze HTTP API calls to back-ends and between back-ends — without changing the browser proxy configuration or causing network issues.
Free for personal use · Windows 11 / 10
HTTP Debugger is used by thousands of companies around the world
Since 2007HTTP Debugger Pro
Want the new UI and full WebSocket, Server-Sent Events, and gRPC support?
Try HTTP Debugger Pro free for 7 days — a modern interface with deep WebSocket frame, Server-Sent Events, and gRPC message inspection for the streams that power AI agents and copilots.
No registration · Windows 11 / 10
What you get
Debug, capture, and modify HTTP traffic
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API
Debug HTTP calls to HTTP API endpoints
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Capture
See in/out traffic from any apps or browser
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Modify
Edit and resubmit HTTP sessions, modify traffic on-the-fly
Fiddler alternative
Not a proxy, no network issues!
Unlike Fiddler and other proxy-based web sniffers, HTTP Debugger doesn't change the browser's configuration for the proxy and can display proxy-connected traffic.
Wireshark alternative
Decrypt SSL traffic from any app
Unlike Wireshark and other Pcap based sniffers, HTTP Debugger can decrypt SSL traffic virtually from any browser or desktop app without installing the server certificate.
Free for personal use
We offer HTTP Debugger for personal, non-commercial use completely free of charge. If you intend to use HTTP Debugger for your business, you need to purchase a license.