Rohos Mini Drive is a free portable partition encryption tool that allows you to create a hidden, password-protected partition on your USB flash drive. It enables secure data storage on removable devices without requiring administrative privileges to access the encrypted partition—even on guest computers.
Remora USB Disk Guard is a free portable file encryption tool designed to encrypt files and folders on your USB flash drive or local hard disk. This portable application can be stored and run directly from any flash drive or portable storage device, requiring absolutely no installation.
Omziff is a Free Portable File Encryption Tool that enables you to encrypt and decrypt text-based files using a wide variety of cryptographic algorithms. This lightweight utility also features password generation, file splitting, and secure file deletion, making it a versatile tool for privacy-conscious users. No installation is required — simply run it from your USB flash drive.
USB Encryption with TrueCrypt – Portable Data Protection: Need a reliable way to encrypt your sensitive data on USB drives or external storage? This open source disk encryption software that allows you to securely encrypt files and folders on USB flash drives, portable storage devices, and hard disk partitions. Designed for on the go security, TrueCrypt supports traveler mode, meaning it can be launched directly from your USB drive without installation on the host system.