LinkChecker can check website for broken links.

It produces a full report on broken links found in all pages on the website.It also can monitor your WEB, POP3, SMTP, FTP server or any TCP port, If a online device does not respond, it can take a pre-defined action that includes sound warning, messagebox to desktop, email notification, execute external programs and more.

In addition program can also generate a log file for your needs.