Since Symantec stopped development of L0phtcrack many people have been looking for alternatives.
So don’t forget…

Jack the Ripper is still king
Medusa is good
Ophcrack for Rainbow Tables
And now one more, introducting LCP, which we have talked about before in the article Password Cracking with Rainbowcrack and Rainbow Tables.
LCP is freeware!
The main purpose of LCP program is user [...]

Man this blows.
It seems it happened quite a while ago, I only just found out about it recently though when I was checking to see if L0phtcrack had been updated past version 5.

Symantec has quietly pulled the plug on sales of L0phtCrack, the venerable password auditing and recovery application.
The decision to discontinue support for L0phtCrack, [...]

1. Nmap
I think everyone has heard of this one, recently evolved into the 4.x series.
Nmap (”Network Mapper”) is a free open source utility for network exploration or security auditing. It was designed to rapidly scan large networks, although it works fine against single hosts. Nmap uses raw IP packets in novel ways to determine what [...]

What is RainbowCrack & Rainbow Tables?
RainbowCrack is a general propose implementation of Philippe Oechslin’s faster time-memory trade-off technique.
In 1980 Martin Hellman described a cryptanalytic time-memory trade-off which reduces the time of cryptanalysis by using precalculated data stored in memory. This technique was improved by Rivest before 1982 with the introduction of distinguished points which drastically [...]