Firebug Good alternative? YES NO

Firebug integrates with Firefox to put a wealth of web development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript...

Free Open Source Mac Windows Linux Firefox

• Discontinued The Firebug extension isn't being developed or maintained any longer. The team advised to use the built-in https://alternativeto.net/software/firefox-developer-tools/ , which ship with Firebug.next Last version of Firebug, 2.0.18, released October 7, 2016, is still compatible with Firefox, but only if the browser's multi-process architecture is not enabled.

Fiddler Good alternative? YES NO

Fiddler is a Web Debugging Proxy which logs all HTTP(S) traffic between your computer and the Internet. Fiddler allows you to inspect all HTTP(S) traffic, set...

Free Windows

Charles Good alternative? YES NO

Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet....

Commercial Mac Windows Linux

Live HTTP Headers Good alternative? YES NO

The goal of this project is to adds information about the HTTP headers in three ways: First by adding a 'Headers' tab in 'View Page Info' of a web...

Free Mac Windows Linux Firefox

HttpRequester Good alternative? YES NO

A tool for easily making HTTP requests (GET/PUT/POST/DELETE), viewing the responses, and keeping a history of transactions.

Free Open Source Mac Windows Linux Firefox

HttpFox Good alternative? YES NO

HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers. It aims to bring the functionality known from tools like...

Free Mac Windows Linux Firefox

HTTP Header Live Good alternative? YES NO

Displays the HTTP header. Edit it and send it.

Free Open Source Windows Web Firefox

HTTP Debugger Good alternative? YES NO

HTTP Debugger Pro - A Professional HTTP Sniffer and Analyzer for Developers

Commercial Windows

HTTP Headers Alternative? YES NO

HTTP Headers allows you to quickly see the HTTP header information for the current URL.

Free Mac Windows Linux

• Warning Suspected of distribute adwares, even after removing the extension

HttpWatch Good alternative? YES NO

HttpWatch is an HTTP viewer and debugger that integrates with IE and Firefox to provide seamless HTTP and HTTPS monitoring without leaving the browser window. It's...

Commercial Windows Firefox

Surge for Mac Good alternative? YES NO

Working quietly on the Menubar, Surge is a high-performance HTTP/SOCKS5 proxy server. It is capable of intercepting and logging the summary of HTTP traffic, and...

Commercial Mac iPhone iPad