SSHKeychain is a GUI front-end for ssh-agent and ssh-add on Mac OS X. It can store your key passphrases in the Apple keychain, automatically add and remove your keys on various triggers. It also has tunnel functionality.
The goal of this project is to create a GnuPG front end for Mac OS X. To that extent, it will make installing GnuPG on OS X easier and provide inter application services to access GPG. Also, GPGME wrapper in ObjC will be done.
Authenticating proxy server software for Mac OS X. The front-end is written in Obj-C using the Cocoa framework, but the actual proxy daemon application is written in C using plain BSD sockets.
OSX Application to keep notes and information safe under 448 bit blowfish encryption system. The application is in beta stage, with some major bugs around. You are advised to verify the bug list.