Without A Trace Surf Guard 

Without A Trace Surf Guard is a powerful 3 in 1 privacy tool that combines a history eraser with a powerful pop up stopper and robust encryption tools that will lock down any file or folder.
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EDCrypt 

EDCrypt is an ActiveX control performing following functions: - encrypts and decrypts data using 6 strong symmetrical block ciphers - computes message digests of data using 18 hashing algorithms - securely shreds files
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Multi-ZIP-licity 

Multi-ZIP-licity is a program for processing multiple ZIP files. It extracts files from multiple archives and creates multiple archives. Extra tools allow to encrypt and decrypt files, list folders as text, change attributes and shred files.
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QuickCrypt Library 

Fast, highly optimized implementation of symmetric (private-key) encryption algorithms: DES, Triple DES (3DES), DESX, BLOWFISH, RIJNDAEL (AES-Advanced Encryption Standard),GOST. Allows to encrypt/decrypt files, memory blocks, strings, streaming data.
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Crypton 

Crypton is a multi-utility security suite, which provides strong security for you files
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Cynapse MailCryptor 

MailCryptor is an e-mail encryption solution, which enables the user to encrypt e-mail messages. MailCryptor works on a 128-bit symmetric encryption algorithm, which ensures the right balance between security and speed of decryption.
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