Here is an alphabetically ordered list of people who made major contributions to XAO Suite (if you feel that you should be in the list please accept my apologies and remind me).

Andrew Maltsev
Overall design and the majority of code.

Bil Drury
Ideas and early code XAO is partially based on.

Brian Despain
Ideas and funding through his company, XAO Inc.

Ilya Lityuga
The initial code for IdentifyUser and MultiPageNav objects.

Konstantin Safronov
ImageCache module.

Marcos Alves
Ideas, specifications, and code for a variety of web modules.