Tools for Developers

by yongqli

8 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,650 reviews

2,685,104 users

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

Web Developer by chrispederick

Rated 5 out of 5 stars 183 reviews

703,603 users

The Web Developer extension adds various web developer tools to the browser.

FoxyProxy Standard by Eric H. Jung

Rated 4 out of 5 stars 295 reviews

370,999 users

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

Tamper Data by Adam Judson

Rated 4 out of 5 stars 115 reviews

132,363 users

Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...

IE Tab by PCMan, yuoo2k

IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox...

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 136 reviews

193,927 users

View HTTP headers of a page and while browsing.

JSONView by Ben Hollis

Rated 5 out of 5 stars 115 reviews

78,338 users

View JSON documents in the browser.

ShowIP by ShowIP Dev Team

Download Now

Experimental

Rated 3 out of 5 stars 214 reviews

84,074 users

Show the IP address(es) of the current page in the status bar. It also allows querying custom information services by IP (right click) and hostname (left click), like whois, netcraft, etc. Additionally you can copy the IP address to the clipboard.

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