4T2 Multimedia Internet, intranet, extranet, CD-ROM and bespoke platform production. http://www.4T2.co.uk/

4What Interactive Specializing in the production of innovative and interactive business applications. http://www.4what.com/

4Site Internet Multimedia and website development for business. http://www.4siteinternet.com/

4DFusion Inc. Offers web design, graphic design and sound design solutions. http://www.4dfusion.com/

3rd Eye Solutions CD authoring, web design, database development ,and screensavers. Based in Wellingborough, Northants, United Kingdom. http://www.3rdeye.co.uk/