The best free alternative to HTTP Headers is Fiddler. If that doesn't suit you, our users have ranked more than 10 alternatives to HTTP Headers and ten of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to HTTP Headers are HTTP Toolkit, Requestly, HackTools and HttpFox.
Web Debugging Proxy that logs all HTTP(S) traffic for comprehensive analysis. It allows manipulation of traffic, supports scripting, and extends with .NET. Debugs virtually any application, implementing man-in-the-middle interception with self-signed certificates. Freeware, ideal for developers.
HTTP Toolkit is a beautiful, cross-platform & open-source HTTP(S) debugging proxy, analyzer & client, with built-in support for modern tools and automatic interception for clients from Docker to Android to iOS.
Requestly is a lightweight proxy available as a browser extension & desktop app to intercept & modify network requests. Using Requestly you can Modify Headers, Redirect Url, Mock API response, Delay/Throttle requests, etc.
HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers.
The goal of this project is to adds information about the HTTP headers in three ways:
Check HTTP Status Codes, SSL Validation, WWW Authentication, Redirects, Access Control, Cache Control, Content Encoding, Cookie Data and more...
Omnibug is a plugin for the Google Chrome and Mozilla Firefox browsers to ease developing and debugging web metrics implementations. Each outgoing request (sent by the browser) is checked for a pattern; if a match occurs, the URL is displayed and decoded to show the details of...
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