Scrapebox Alive Checker Addon

The Alive checker addon is a great addon to test bulk urls to see if they are alive or dead.  You could use this to test internal pages of your site, urls for customers, or many other uses.  It has options that let you specify the status codes that should shows as alive.  You also get the choice of resolving relocation urls or taking them at face value.

This addon is a free addon with scrapebox and works very quickly.