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JavaScript Debugger Requires Restart

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

Rated 4 out of 5 stars (52)
882 users

YesScript Requires Restart

A JavaScript blacklist

Rated 4 out of 5 stars (225)
33 users

Scriptish Requires Restart

The greatest user script engine on the Internet (a fork of Greasemonkey).

Rated 4 out of 5 stars (109)
10 users

View Dependencies Requires Restart

View Dependencies adds a tab to the Page Info window, in which it lists all the files which were loaded to show the current page.

Rated 4 out of 5 stars (33)
1 user

Tiny JavaScript Debugger

TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavaScript.

Rated 5 out of 5 stars (8)
54 users

Whois Lookup & Hosting & DNS & Site Flags Firefox Requires Restart

IP Whois Lookup & Website Reviews & Rating. Display country flag indicating website location. Alexa and Norton Antivirus Site Adviser. Supported: GoDaddy, NetworkSolutions, Dotster, 1and1, NameCheap, Register, Yahoo, 123-Reg, FatCow, Enom, FastHosts.

Rated 3 out of 5 stars (15)
7 users

JavaScript Object Examiner Requires Restart

Display JavaScript object methods and properties for any available scope.

Not yet rated
0 users

Controle de Scripts Requires Restart

Controle de Scripts is an extension that allows you to control what JavaScripts do on your browser.

Rated 4 out of 5 stars (27)
1 user

XPCOMViewer Requires Restart

XPCOMViewer is tiny tool for exploring XPCOM components.

Rated 4 out of 5 stars (6)
0 users

View Source Requires Restart

Shows all source files of a webpage.

Rated 4 out of 5 stars (7)
2 users

JSON Inspector

Inspect JSON object from a URL or entered data.
Requires either DOM Inspector or DOM Inspector Plus! [dm] extension.

Not yet rated
0 users

Koders JavaScript Search

Search for JavaScript source code on Koders.com

Not yet rated
5 weekly downloads

Quirksmode Search

Searches Quirksmode.org

Not yet rated
0 weekly downloads

Gomodo

Search Tool for Webdeveloper

Not yet rated
0 weekly downloads

SelfHTML

Search the german site SelfHTML

Rated 5 out of 5 stars (1)
0 weekly downloads

Dev Addict Developer Search

Search engine for developers that searches for tutorials, as well as through README's and video training sites.

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0 weekly downloads