Account Buddy

From the developer: Account Buddy is an organizer and manager for your accounts, specialized for secure storing of personal information. It remembers your logins/passwords, software registrations (i.e., serial numbers), credit card numbers, pin codes, bank accounts, and so on. It stores accounts sorted and organized in categories. Account Buddy lets you easily find the accounts matching given keywords and properties and enables you to secure stored confidential information with password protection. The XML export/import function allows you to exchange your information between Mac and PC, to view your accounts with a Web browser, and gives you more options to print and manipulate data within other applications.

Requirements:

Mac OS 8.x/9.x