ZipLip
- A secure gateway appliance for encrypting and archiving email and files, secure webmail, and secure file collaboration.
- http://www.ziplip.com

GlobalCerts
- Offer a secure email gateway solution for businesses. Includes live demos, webcasts and brochures.
- http://www.globalcerts.net/

CenturionSoft - Privacy Security Encryption
- Software designed for businesses and consumers. Utilities include: privacy protection, encryption of emails and files, and productivity tools for MS Windows.
- http://www.centurionsoft.com

Tumbleweed Communications
- Tumbleweed messaging solutions combine Internet technologies in electronic mail, Web, databases, encryption, and content filtering to offer complete, secure electronic messaging solutions for e-business.
- http://www.tumbleweed.com

FileBottle.com
- Send free passcoded emails. Simple to use.
- http://filebottle.com

CryptoHeaven
- Premium secure instant messaging, chat, online data storage, file sharing and email using 256 bit encryption. Free download offering 2MB of storage. Upgrades of storage and bandwidth are available.
- http://www.cryptoheaven.com

Zip File Encryption
- Software to encrypt/decrypt/shred zip files for emailing. Recommended by PCWorld. Provides archive facilities and the built in compression feature makes for smaller files for transmitting.
- http://www.secureaction.com

PostX
- Provides secure Internet-based solutions that enable businesses to confidentially deliver high-volume, high-value information to each customer using Email and the Web.
- http://www.postx.com

Zixmail
- Web based messaging offering secure delivery. Registration required by the sender and recipient. PC Magazine's Editor's Choice award. Compatible with other web based mail services. User does not have to change email accounts.
- http://www.zixmail.com

iSolv Technologies TSPMail
- Provides security for e-mail communication without modification to existing software or network components through the use of Microsoft Winsock2 technology.
- http://www.isolv.co.za/TSPMail/TSPMail.html

ControlMail
- Document security software using sophisticated encryption techniques to send information via the Internet. The sender can apply security rights to control how a recipient handles the document information.
- http://www.controlmail.com