Rayzume Ltd is a small company based in Selborne, Hampshire which specialises in software engineering for real time safety critical systems. Most work undertaken by Rayzume is for the defence industry.

In recent years Rayzume has started to design, build and host websites. The overriding criteria with any design is that it must be easy to navigate and impart information in a clear fashion. No amount of fancy animated graphics will increase the site's useability.

The Xtreme Everest site has been designed with ease of use and accessibility in mind, all the written content can be accessed as text-only pages to ensure easy access for users with disabilities.

Site content and images can be entered via administration pages direct from Everest Base Camp ensuring that the site contains up to the minute information as the expedition progresses.