What is Gecko?

XPE Gecko is a portal engine developed with the XPE technologies.
It allows highly reusable UI components called Xlets to be developed.
It is a development environment for rapidly developing Web applications with very little programming efforts.

Development framework for web applications

The trend is unstoppable - - every new application you are going to build, you want it to be web based. All the non-web applications you have, you wish they could all be "converted" into web based.  The reason is simple, the total cost of ownership for web applications is significantly lower than non-web based applications.