Developing an OpenLaszlo application is as simple as Edit, Save, Refresh. Use any text editor to edit a source file, and type its URL into your browser. The server automatically compiles the application into a Flash object file, and the browser displays it.
You can get a quick overview of OpenLaszlo, take a look at Learn Laszlo in 10 Minutes, a quick introduction to getting started in OpenLaszlo.
When you're ready for more technical detail on OpenLaszlo's architecture and design, and you can download our OpenLaszlo White Paper: OpenLaszlo: An Open Architecture Framework for Advanced Ajax Applications.