There are many free and paid encryption tools available on the Internet. Some better than others, but nonetheless one can setup a secure messaging system (email encryption), secure transactions (SSL enabled web browsers) and secure connectivity (VPNs and SSH) on a very small budget. Some of the small business/individual solutions available include:
Hushmail - here is another way of adding encryption to your email. But unlike software tools (say PGP) it is a service built into web based email. With free and paid service, one can get the flexibility of a web based email account combined with the security of 1,024-bit encryption, digital signatures and support for the OpenPGP standard.
FILE ENCRYPTIONPrivate File - Private File is a fast and easy way to protect yourself and your company by encrypting your files before sending them. With a simple drag-and-drop, or a menu point-and-click, your information is safe. And with the strongest encryption, you can be sure that no one but your desired recipient will be able to use your information.
F-Secure FileCrypto - developed by Datafellows Corp, this is a long standing file encryption application that supports strong encryption. Also comes for Pocket PC.
ShyFile - free and paid versions of a strong encryption application that lets you create self-executable, encrypted packages.
VPNsPGP - certain versions of this applications allow point to point encrypted VPN sessions.
Windows NT/2000/XP/Vista/7 & Linux - they allow 'secure' data transmssion between two nodes using the PPTP protocol.