Ophcrack is a free Windows password cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method. It comes with a Graphical User Interface and runs on multiple platforms.
Features:
- Runs on Windows, Linux/Unix, Mac OS X, ...
- Cracks LM and NTLM hashes.
- Free tables available for Windows XP and Vista/7.
- Brute-force module for simple passwords.
- Audit mode and CSV export.
- Real-time graphs to analyze the passwords.
- LiveCD available to simplify the cracking.
- Dumps and loads hashes from encrypted SAM recovered from a Windows partition.
- Free and open source software (GPL).