Ophcrack is a free Windows password cracker based on rainbow tables. It is one of the most popular password cracking tools available.The name "Ophcrack" comes from the fact that it uses the Win32 port of the John the Ripper password cracker to perform the actual cracking. The John the Ripper code was written by Alexander Peslyak, better known as Solar Designer.Ophcrack was created by David Lecomte in early 2005. The first public release was made in October 2005. The current version is 3.6.0, released on May 8, 2016.Ophcrack is available for download from the project's website. It is also included in a number of live CDs, such as Helix, Ophcrack LiveCD, and Trinity Rescue Kit.One of the most popular features of Ophcrack is its ability to crack passwords using rainbow tables. Rainbow tables are pre-computed tables of hash values that can be used to crack passwords very quickly.Ophcrack can crack passwords for a number of different operating systems, including Windows 10, 8.1, 8, 7, Vista, XP, Server 2016, 2012, 2008, and 2003.If you're looking for a tool to crack Windows passwords, then Ophcrack is a good choice. However, if you're looking for the best solution to the problem, then you should consider using Kon-Boot.Kon-Boot is a tool that allows you to login to a Windows computer without knowing the password. It works by patching the Windows kernel to allow you to bypass the password check.Kon-Boot is a much more effective solution than Ophcrack because it doesn't require you to have any knowledge of the password. All you need is a Kon-Boot USB drive and you can login to any Windows computer.Kon-Boot is available for purchase from the developer's website. A single license costs $29.95 and allows you to use Kon-Boot on an unlimited number of computers.If you're looking for a way to crack Windows passwords, then Kon-Boot is the best solution. It's easy to use and it doesn't require any knowledge of the password.