SSuite Mercury Rising - SSuite Mercury Rising data security software is the best free online AES encryption-based app that runs directly inside your web browser using pure HTML5 and javascript code.
Encrypto - Encrypto lets you encrypt files before sending them to friends or coworkers.
Renee File Protector - Equipped with AES 256 encryption, Renee File Protector provides overall protection to data in local & external disk. You can lock folders/files at will.
File Lock PEA - Password-encryption of files and directories. File PEA encrypts files and folders with authenticated encryption to protect confidentiality and integrity. The program uses memory-hard key derivation functions to prevent custom hardware attacks.
SensiGuard - Use SensiGuard file encryption software to lock and encrypt files and folders on your Windows XP, Windows Vista or Windows 7 PC or any USB flash drive
Unicode Crypter - Encrypt and Decrypt Unicode!