Antrasoft Secure Messenger 3.5
The E-mail program for communication 100% securely. The program generates security certificates (public & private 1024 bit keys) , automatically exchanging public keys and install them into Windows to make your own personal 'circle of trust' between your partners. The program enables users to encrypt and digitally sign their e-mails or voice messages, ensuring a high level of confidentiality for your personal information.

Multilevel Digital Signature system for enterprise 3.2_FreeVersion
A facile and efficient digital signing system for enterprise. Electronic file in any format can be signed by many persons, dependency relationship between different signatures can be build, signer's advises can be involved in the signature. RSA key (1024 bits) ensures signature safety and dynamic transport encryption protects transported information. This is a free edition.

Chilkat Python Encryption Library 4.0
The Chilkat Python encryption library provides an advanced API for symmetric encryption, public-key encryption, digital signatures, hashing, and encoding/decoding.

DeepCoder 1.0
DeepCoder is a program to encrypt, decrypt and/or digitally sign e-mails and files using secret keys (passwords) or public keys. It can be used with any e-mail program or wordprocessor program. No plug-ins are required.Very easy to use and very straightforward!DeepCoder works with any POP3 e-mail client (like Outlook, Outlook Express, Eudora, Pegasus, ...) or a browser for webmail (Yahoo! mail, Hotmail, ...) to encrypt and decrypt e-mails.

Transporter 1.4
The Transporter acts like an electronic secure courier to deliver your data and documents in encrypted form safe from prying eyes or those who would tamper with them. It Encrypts, digitally signs and armours to send sensitive information over the Internet without SSL. Typically you would embed it in your own Internet applications.

Multilevel Digital Signature System for Enterprise
A facile and efficient digital signing system for enterprise. Electronic file in any format can be signed by many persons, dependency relationship between different signatures can be build, signer's advises can be involved in the signature. See detail at www.wdssoft.com

CipherWall Safe client 2.40
CipherWall Safe is a confidential data remote storage system. A simple, user-friendly software encrypts and uploads your files to the remote storage space, erasing all traces of the confidential documents on the sending computer. Using this client program you can register on free demo server. Or you can visit www.cipherwall.com do download server distributive.