TopSecret Mobile 2.0.4
the author of this app says:
TopSecret Mobile allows you to create/view/edit your data on any Palm(tm) handheld. It keeps all your sensitive data safe.
Use TopSecret Mobile to store passwords, credit card information, Web account logins/passwords and other personal data.
An encryption algorithm with 128-bit encryption keys keeps it safe.
TopSecret includes the desktop application, the handheld application for the Palm Computing Platform, and a synchronizing conduit which provides two-way synchronization between the desktop and handheld.