KeePassX - Open Source Password Manager

KeePassX is an application for people with extremly high demands on secure personal data management. It has a light interface, is cross platform and published under the terms of the GNU General Public License. KeePassX saves many different information e.g. user names, passwords, urls, attachments and comments in one single database. For a better management user-defined titles and icons can be specified for each single entry. Furthermore the entries are sorted in groups, which are customizable as well. The integrated search function allows to search in a single group or the complete database.
KeePassX offers a little utility for secure password generation. The password generator is very customizable, fast and easy to use. Especially someone who generates passwords frequently will appreciate this feature.

Yadabyte - Password Manager

Open Source Password Manager for Windows

Yadabyte Passwords is like a tiny Keepass manager, except it carries fewer bells and whistles. Though it’s a bit older, this portable password manager is absolutely a breeze to use. You simply create a master password and then type the usernames, passwords, and URLs for all the services you want included in your password database.

Live View - Open Source Forensics

Live View creates a virtual machine from a raw disk image or physical disk. As a result, you can see and interact with a PC just as the user did, without changing the environment or endangering your own PC. Operating System: Windows.

Snort - Open Source Intrusion Detection

As the most widely deployed intrusion prevention technology in the world, Snort has earned the right to call itself "the de facto standard for intrusion prevention/detection." It performs real-time analysis to detect buffer overflows, stealth port scans, CGI attacks, SMB probes, OS fingerprinting attempts, and other attacks. Operating System: Linux, Unix, BSD, Mac OS X.