Laszlo is a platform for the development and delivery of rich Internet applications on the World Wide Web. The Laszlo presentation server is a Java servlet that runs a special XML file written in the LZX language that allows for quick development of rich media applications.
This is a significant release along the path to 5.0, which is the upcoming release with the newly redesigned components. 4.9.0 contains over 160 bugfixes and implements the infrastructure to support the new components. It also provides new features for creating and deploying mobile applications.
URL: OpenLaszlo | the premier platform for rich internet applications