RSA Laboratories -  .

ArticSoft - - PGP-based file and email encryption and digital signature software.

Averina Software - - Library for Authenticode signing and verification of executable files, drivers, catalogs and scripts.

Bloombase Technologies - - Encryption for enterprise storage systems/databases, email and Service Oriented Architecture (SOA).

Cryptomathic - - Encryption and authentication products including EMV card preparation systems.

Data Encryption Information Center - - Guides ordinary users and students around the subject of data encryption.

DESlock+ - - Transparent encryption of files, folders and emails with an optional USB token. Supports AES, 3DES and Blowfish algorithms.

Digital Security International - - Backup tape drive encryption hardware. Product and company details, news and contact information.

Distributed Management Systems Ltd. - - Manufacturer of user authentication tokens, including a CESG-certified version for UK Government use.

DISUK Limited - - Supplier of data encryption devices for tape backup and archive drives.

DOMUS IT Security Laboratory - - Accredited laboratory evaluates and certifies security and cryptographic products against Common Criteria, FIPS 140 and INTERAC (SPED).

Encryption Wizard for Oracle - - Offering data encryption software for the Oracle RDMBS. The Encryption Wizard can perform DES3 Encryption and obfuscation on a complete schema.

Futurex - - Supplier of hardware security modules and key management systems for financial services.

The Hardware Side of Cryptography - - Blog outlining techniques to implement cryptographic and hash functions in PIC microcontrollers.

Ingrian Networks - - Offers a security appliance that encrypts critical data in applications and databases.

JSignPdf - - Tool which adds digital signatures to PDF files. Written in Java and provided as open source.

MCSoft Security Solutions - - Offers cryptography and wipe software.

Navastream - - A leading provider of encryption devices for IP, ISDN, Email, and Cellular Communications, using Triple-DES and the newer AES standards.

Packet General Networks Inc. - - Remotely-managed application servers with AES data encryption.

Pate Williams' Implementations - - Cryptographic algorithms in C, C++, Java and other programming languages.

PMC Ciphers Inc. - - Company offering "polymorphic cryptography" i.e. variant algorithms and potentially huge keys.

Proofspace - - Cryptographic time stamping solution for document verification and authentication.

Red Iron - - Software to encrypt credit card data between retail Point Of Sale, back-office and enterprise systems.

Sigaba - - Secure e-mail, instant messaging and document transmission. Product details, news, customer portfolio, support options and contact information.

Thales eSecurity - - Cryptographic products to secure electronic payments, network connections and SCADA systems, manage identities and more.

Voltage Security Inc. - - Identity-based elliptic curve encryption for email, application data, laptops, removable storage devices and network shares.

Winzap - - File, photo and email encryption software. Free demo download available.

xyzmo Software GmbH - - Software to add digital signatures to electronic documents. Range includes software to generate a digital signature based on the biomentric generated by a handwritten signature.