I use Firefox mainly as my feed reader, but every now and again I like to check out the extensions available. This one’s kinda neat and can be useful for web dev stuff (or eyeballing a competitor’s site! )

Firefox Link Checker

Check webpage links at a glance with simple color coding. Ditch those massive listings of bad links that provide no context and add LinkChecker to your arsenal of web development tools today.

It only checks one page at a time but still can be quite useful.

The greatest thing about Firefox’s extension feature is how easy these tools are to add to the browser. Love that! Now if only the browser would speed up a bit.