SSHKeychain for Mac

From Bart Matthaei:

SSHKeychain is a graphical front-end for ssh-agent and ssh-add on Mac OS X.

Currently, SSHKeychain has the following features:

• Can remove all keys from the agent after sleep or after a minimum period of sleep (especially useful for notebooks).
• Can remove all keys from the agent when a Screensaver is detected.
• Can remove all keys from the agent when the Apple keychain is locked.
• Can add keys to the agent whenever the Apple keychain is unlocked.
• Can add keys to the agent whenever ssh is trying to use the agent with no keys on the chain.
• Can display itself in the StatusBar, Dock, or both.
• You can store the passphrases for your private keys in the Apple Keychain.
• Can add the necessary variables to the global environment (~/.MacOSX/environment.plist),
  so you can use SSHKeychain with all your programs (Terminal, Project Builder, etc).
  You can also edit the global environment from within the Preferences.
• You can lock/unlock the Apple keychain from a menu item.
• Works seamless with the commandline tools. (i.e. tracks activity coming from the commandline tools, and updates it's UI.)
• Works with requests coming over the network (through AgentForwarding).
• Can generate new keypairs.
• Tunnel Support