SysAdm

by xpoint0

6 Add-ons in this Collection

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 240 reviews

386,669 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Flagfox by Dave G

Rated 5 out of 5 stars 626 reviews

656,843 users

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 154 reviews

177,291 users

View HTTP headers of a page and while browsing.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 161 reviews

97,621 users

An HTTP analyzer addon for Firefox

YSlow by YSlow

Rated 3 out of 5 stars 186 reviews

110,756 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.

ShowIP by ShowIP Dev Team

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Experimental

Rated 3 out of 5 stars 284 reviews

80,387 users

Show the IP address of the current page in the status bar. It also allows querying custom information services by IP (right click) and see location and avaiable vouchers for shopping sites. Additionally you can copy the IP address to the clipboard.

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