Yes. The addon Firebug for example allows you to analyze and edit the code currently displayed in the browser to your liking. Note that it will really only affect what is being displayed. As soon as a new page is loaded, for example when clicking a link, or the page is refreshed, all changes are undone.
a website called file2hd or a firefox addon like downloadhelper
To utilize both, you can install Firefox and then install the 'Coral IE Tab' addon to use IE inside of Firefox's interface. https://addons.mozilla.org/en-US/firefox/addon/10909
GET FIREFOX, (IF YOU DONT HAVE IT) DOWNLOAD THE ADDON ILLIMITUX AT https://addons.mozilla.org/en-US/firefox/addon/11037
Unlike Mozilla firefox does not have a tools-web development option by default any more where you clild lunch the dom inspector. You can use this addon from mozilla to use the feature. Get the addon form the following link. https://addons.mozilla.org/en-US/firefox/addon/1806
Firefox's https://addons.mozilla.org/en-US/firefox/addon/downthemall/
Try this AddOn: https://addons.mozilla.org/de/firefox/addon/6543 Then go to Tools -> Add-ons -> Nightly Tester Tools, and click on settings...
go to https://addons.mozilla.org/en-US/firefox/addon/chromifox-basic/
https://addons.mozilla.org/en-US/firefox/addon/126
Firefox is an alternative browser to IE. There is no compatibility between the two programs to worry about, only if the websites you browse are Firefox-compatible. To utilize both, you can install Firefox and then install the 'Coral IE Tab' addon to use IE inside of Firefox's interface. https://addons.mozilla.org/en-US/firefox/addon/10909
This is whats known as a "geo redirect" you probably have a canadian IP address. You can fix it using an addon such as "Modify Headers" (firefox only) or "Change HTTP Request Header" (Chrome only) or by using a proxy.
Firefox users can install User Agent Switcher for the easy fix, while Safari has a user agent changer built in. Chrome can change its user agent string. I use this firefox addon https://addons.mozilla.org/en-US/firefox/addon/user-agent-switcher/?src=api
use an addon by the name of "https everywhere".