1)   SignetSure 1.0
SignetSure is Win32 security tool for protecting files from hacker alteration. Create digital signatures for your files from Win32 app. Then authenticate your files with single API call. Uses RSA public key cryptography. C/C++ or Visual Basic.
SignetSure, signature, digital signature, PKI, RSA, public key, digital certificate, security, cryptography, encryption,

 2)   pdfMachine Signer 10.9
pdfMachine - Signer is the easy way to digitally sign your PDF files. Simply, quickly and lowpriced , Sending 1 to 1 signed copies of a document. It's never been so easy to send save documents per e-mail.
pdf, pdfmachine, pdf generator, pdf shareware, free pdf, pdf printer driver, Broadgun, pdf printer, digital signer, pdf signer Adobe certificate,

 3)   Privacy.FILE v6.0 02.0808.0012
Privacy.FILE is a high performance data security solution for Windows. It is one of the most comprehensive encryption applications on the market today. Privacy.FILE has smartcard based key storage for additional security. Manage your own keys & certs
encryption, smart card, smartcards, tokens, digital privacy, aes, 3des, des, rc2, rc4,

 4)   SnugServer 4.0
SnugServer is an Email Server, Web Server, FTP Server, NewsServer and ListServer. It's your all-in-one solution to managing your Internet Presence. Comes with Anti-Spam, Anti-Virus & SSL/TLS/S/MIME Encryption. Allows Digital Certificate creation.
email server, mail server, ftp server, listserver, web server, webserver, newsserver, ssl, tls, spam,

 5)   PlexCrypt Compression-Encryption 3.1
PlexCrypt allows set of files or folders to compress and encrypts and decrypts set of files or set of folders based on PKI and Passwords using AES, Blowfish, CAST, DES, ElGamal, IDEA, IES, RC4, RC6, RSA, Serpent, etc.
Compression, Encryption, Decryption, Public Key Infrastructure, Synchronous, Self Decryption, Digital Certificate, AES, Blowfish, CAST,