Important: gxui is a user controls library for GeneXus X or higher, based on ExtJS. It features a set of controls for building highly interactive, web 2.0 applications with GeneXus.
It’s an open source project, licensed under a BSD license, so you are free to use it in your applications, as long as you fulfill the ExtJS licensing conditions (free for non-commercial usage or open source projects; for commercial use, you must buy a ExtJS license).
GXflow X, GeneXus Server and GXportal are using gxui Library.
Take a look at gxui Library v2.0 (current version) for more information and documentation.