Better Link Tester (BLT) is a Macintosh OS X based Website link testing application. A link checking application is used to make sure that every link on your site actually points somewhere and doesn't show the dreaded 404 error. It is a great way to make sure that your site give your customers the best experience, so that they will want to come back again and again.
BLT is a great tool that will make the quality checking process easy and painless. You just point it at the URL on your site that you want to test, whether it is the first URL or one deep within your site it doesn't matter, BLT can check them all.