There might be many times you have heard of Ophcrack, now what is actually it well is a popular to crack passwords in windows. 
Many Hackers out there love this tool and you should also, Tools like this made hacking possible in this world of security’s.
What is ophcrack ?
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....
Ophcrack is an open source (GPL licensed) program that cracks Windows passwords by using LM hashes through rainbow tables.
The program includes the ability to import the hashes from a variety of formats, including dumping directly from the SAM files of Windows. It is claimed that these tables can crack 99.9% of alphanumeric passwords of up to 14 characters in usually a few minutes.
*Source Wikipedia
Features:
1. Runs on Windows, Linux/Unix, Mac OS X, ...
2. Cracks LM and NTLM hashes.
3. Free tables available for Windows XP and Vista.
4. Brute-force module for simple passwords.
5. Audit mode and CSV export.
6. Real-time graphs to analyze the passwords.
7. LiveCD available to simplify the cracking.
8. Loads hashes from encrypted SAM recovered from a Windows partition, Vista included.
9. Free and open source software (GPL).
Screenshot
Download
XP free small (380MB)
formerly known as SSTIC04-10k
Success rate: 99.9%
Charset: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
md5sum: 17cfa3fc613e275236c1f23eb241bc86
formerly known as SSTIC04-5k
Success rate: 99.9%
Charset: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
md5sum: f6f5536975b57c891ed5f2de702a02bd
formerly known as WS-20k
Success rate: 96%
Charset: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~ (including the space character)
Happy Hacking @hackerthedude
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