IE Tab Requires Restart
IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox...
BetterPrivacy-signed Requires Restart Featured
Control a new, trickier kind of cookie, better known as an LSO or Flash cookie. The BetterPrivacy safeguard offers various ways to handle Flash-cookies created by webpages with the help of your Flash plug-in...
User-Agent Switcher Featured
Quickly and easily switch between popular user-agent strings.
Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.
Rotates complete browser profiles ( from real browsers / devices ) at a user defined time interval. It includes many extra privacy enhancing options
RESTClient, a debugger for RESTful web services. Requires Restart
Notice: some important features (XML indentation and load old saved requests) are missing in version 2.0.0, please update to version 2.0.1.
Please follow the link ("View other versions") below To install version 2.0.1.
1) Screen capture web pages.
2) Selected regions.
3) Whole browser windows.
4) Slack direct upload (NEW!)
Edit screenshots and save images as local file or Google Drive. Annotate screenshots with different tools. Upload and share!
Cookies Manager+ Requires Restart
Cookies manager to view, edit and create new cookies. It also shows extra information about cookies, allows edit multiple cookies at once and backup/restore them.
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.
HttpRequester Requires Restart
A tool for easily making HTTP requests (GET/PUT/POST/DELETE), viewing the responses, and keeping a history of transactions.
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
Fire IE (FireIE, Enhanced IE) Requires Restart
Embeds Internet Explorer(IE) to use the powerful Firefox add-ons.
Not only an enhanced IE Tab, but also an enhanced Internet Explorer with Adblock Plus and FireGestures support.
Switch to the IE engine in one click and dismiss your IE.
HackBar Requires Restart
Simple security audit / Penetration test tool.
Proxy Switcher Featured
Access to the complete Firefox's proxy settings right from a toolbar panel
Hide My IP is number one tool for hiding your IP and unblocking any web site!
Live HTTP Headers Requires Restart
View HTTP headers of a page and while browsing.
Open current page or link in tor browser for better privacy
Override browser user agent string