KeepPassSD is a Windows Mobile port of the popular open source password manager KeepPass. Just like the desktop software, KeepPassSD securely saves passwords to various login services on your Windows-based mobile device.

For first time users, here’s how it works. KeepPassSD stores all your user-names and passwords for various login services in a single master database which is protected by either a master password or key files that you carry with you on a floppy or a USB device. Opening the master database without the proper password is nearly impossible.

There are two development branches fro KeepPass for Windows Mobile: KeepPassPPC and KeepPassSD. KeepPassPPC works on all PocketPC 2003 SE and Windows Mobile 5.0 PocketPC and Phone Edition based platforms. KeepPassSD, the would-be successor of KeePassPPC, is under heavy development and should run on PocketPC 2003 SE, Windows Mobile 5.0 PocketPC, Phone Edition and SmartPhone, Windows Mobile 6.0 standard and Pro editions.

Make sure you backup all your data before installing any of these tools. Download KeePassSD here.