Xenu's Link Sleuth
Xenu's Link Sleuth is a free program for searching of broken hyperlinks in web sites. It was created by Tilman Hausherr for Windows in 2010.
Xenu's Link Sleuth can check if there are broken links on your site in one session as when it follows a link it tests all the links on the page.
The application has clear understandable interface. It can show the users structures of some web sites.