Offline NT Password & Registry Editor
Open Source
chntpw is a software utility for resetting or blanking local passwords used by Windows NT, 2000, XP, Vista, 7, 8 and 8.1.
Kon-Boot
Commercial
Kon-Boot is an application which will silently bypass the authentication process of Windows based operating systems.
John the Ripper
Open Source
John the Ripper is a free password cracking software tool.
Compare ophcrack with alternatives
Compare Offline NT Password & Registry Editor and ophcrack and decide which is most suitable for you.
Compare John the Ripper and ophcrack and decide which is most suitable for you.