3 of 11Image
LCP is a user-account password recovery tool for Windows NT/2000/XP/2003. This tool can recover using a dictionary attack, brute force attack, or a hybrid dictionary/brute force attack. LCP allows you to import from a local computer, remote computer, SAM file, .LC file, LCS file, PwDump file, and Sniff file.
As with many of these applications, you should avoid using your machine while LCP recovers passwords, as it will consume the majority of your machine resources for the crack.
Ophcrack is one of the most popular password recovery tools. It's free (open source as well), cross platform, and very reliable. Ophcrack uses a solid implementation of rainbow tables that just happens to have been done by those who created the method.