a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography
a library of functions and a framework to interface with crypto algorithms provided by the calling application, built-in, or provided through shared libraries.
a fast password cracker, currently available for many flavors. Its primary purpose is to detect weak Unix passwords. Besides several crypt(3) password hash types most commonly found on various Unix flavors, many others supported out of the box