Looks for broken links on page, links that are not working anymore - returning 404 code.
You can select to check whole page, or just links in selection.
Is incredible fast - checking over 60 links / 1 second - only time outs can make it slow
Checks also 'option' tags with value of url and 'area' tags for clickable images.
After check you get an eye-candy statistics
For comparison, we checked www.ibm.com/sk/ webpage
Link Evaluator: 2 minutes and 16 seconds
LinkChecker: 3 minutes and 1 second
Pinger: 19 seconds
It's that fast !