Shrew Soft Mac OSX vpn client
Shrew Soft have a Mac OSX port of the VPN client based on the head ( 2.2.x ) sources. It seems that it requires more testing, but it appears to be more or less stable.
There are two requirements / dependency before running the native install package (.dmg file)
1) Install the LGPL Qt Framework for Mac OSX.
2) Install the current release of the TUN/TAP driver for Mac OSX.
3. The finally, install the Shrew Soft VPN client.
You should now find the VPN Access manager in the Application folder. This have been tested to work on Lion and Mountain Lion.