I've just posted a pre-release test version of KeePass Portable. KeePass is a free, open source, easy-to-use password manager. It's mostly portable by default but I added a launcher to handle remembering your last used paths and safes. This makes it easier for most folks that use only one password store as it will come up with it as soon as you start KeePass Portable if you set it to in the Options window. And, it's pacakaged in PortableApps.com Format, so it'll integrate with the PortableApps.com Menu/Suite.
Please give it a try and post any feedback:
Download KeePass Portable 1.06 Pre-Release 1 (about 1MB download / 1MB installed)