CryptoStorage for Pocket PC 1.5.1
CryptoStorage is a reliable and easy-to-use system for encrypting private data and controlling access to it. With CryptoStorage, you can create one or more cryptographic storages and store files in them. An open storage is a special folder in the root directory of your Pocket PC. You specify the name of this folder when you create the storage. All data read from or written to this folder gets transparently encrypted/decrypted on the fly.

Secure Storage Pro 1.3
Want to be absolutely sure your data is always protected? Want to have your files encrypted but don't want to hinder access to them? Get Secure Storage Pro, a virtual disk utility that encrypts data on the fly. Place all your confidential data (files, documents, pictures, e-mails, etc) onto a virtual disk and set the password. Only the password bearer will be able to access data, the others won't even know it's there! 100% FREE Trial.

ID Folder Protector 1.2
ID Folder Protector is a very easy to use program, designed to help you maintain the privacy of your personal data. It locks, hides, encrypts and protects from viruses, Trojans and spyware, files and folders you wish to keep for your viewing only.

Encryption Shield 2.0.2
Encryption Shield enables you to encrypt and password protect any type of file, including documents, images, videos etc. The program offers a choice of 4 encryption algorithms, Rijndael with 256 bit key (AES 256, now it is Advanced Encryption Standard), Blowfish, DES, 3DES,and converts the protected file into a decfile.