Aptimize's first New Zealand customer was Trade Me. Two years on, the worldwide customer list includes Disney, Microsoft.com, Google, the US army and other military sites, Dell, Vodafone in Europe and, in New Zealand, Gen-i/Telecom, Mainfreight and Zespri.

"We're also starting with some of the big US banks," Robinson says.

Aptimize has been awarded international patents for the Website Accelerator.

The Accelerator optimises web pages in real time, with a simple software installation on the client's web server. There is no extra hardware, no code or browser changes. Page load times are reduced by up to 75 percent.

For a company like Google, that means more page impressions and more advertising revenue. US company BuyOnlineNow, which delivers more than 30,000 office products, increased its top-line revenue from web site sales by 3.33 percent after installing Web Accelerator, saving 26 percent in bandwidth costs and $6300 in hardware costs in the first year. The US company says that Aptimize paid for itself in just six weeks.