TryAgain is an extension for Mozilla Firefox that automatically keeps retrying when a server is not found. When you reach Firefox’s built-in page saying ‘Server not found’, a countdown timer starts running and after a user-defined interval page will refresh, hence retrying to find the server. It also contains a counter that shows how many refreshes have been done, and allows the user to limit that number to a certain maximum.
Besides retrying TryAgain offers additional functionality: it presents links that allow you to search for the missing web page in Google Cache, Wayback Machine, CoralCDN, Yahoo! Cache, Bing, Gigablast or WebCite with just a single click of a button. More Info »
It automatically checks if the server is down for everyone or is it just a local problem through : http://www.downforeveryoneorjustme.com and http://www.uptimeauditor.com
----Works with Firefox 2.0 - 9.*, SeaMonkey 2.0 - 2.2a1pre, Mobile 1.0 - 9.0a1, Thunderbird 2.0 - 3.3a4pre