Reloadevery

Reload Every is an add-on for Firefox that allows you to automatically refresh your browser at a given frequency. Although this may sound a bit useless at first glance, it is actually very handy if you want to buy tickets for a popular event, for example, or follow a sporting game or stock... Platforms: Windows

With this Plugin you can style your markup right in your browser with a build-in element selector and CSS editor. Generate the CSS code of altered elements with one click and use it in your own stylesheet. Design in the BrowserI was inspired by the article Make Your Mockup in Markup by Meagan... Platforms: JavaScript

A Firefox theme designed for optimal screen usage, leaving lots of room for browsing. LittleFox, designed for optimal screen usage, leaving lots of room for browsing. Includes support for personas, forecastfox, tabbrowser preferences, fusion, reloadevery, stumbleupon, gmail, basics, calendar,... Platforms: Mac

LittleFox is a Firefox theme designed for optimal screen usage, leaving lots of room for browsing. Includes support for forecastfox, tabbrowser preferences, fusion, reloadevery, stumbleupon, gmail, basics, calendar, downloadstatusbar, quicknote, offline, rss-reader, sage, scrapbook, reminderfox,... Platforms: *nix