System Requirements

OpenLaszlo's adherence to open standards simplifies the server-side and client-side deployment requirements. These requirements are summarized below.

• Client Requirements
• Server Requirements
• Notes

Client Requirements

Requirements for OpenLaszlo 3.x and earlier

Users of OpenLaszlo 3.x applications require a Web browser with Flash 6 or later installed. This includes a wide range of web browsers on a variety of operating systems across numerous hardware platforms including PCs, Pocket PCs, some web-enabled PDAs and certain advanced television set-top platforms.

OpenLaszlo has been field tested on many browsers; however, this list includes only those browsers and operating systems that are thoroughly and successfully certified as part of the OpenLaszlo QA process:

• Windows XP / 2000
  • Firefox 1.5
  • Internet Explorer 6.0.2
• Mac OS X 10.3 / 10.4
  • Firefox 1.5
  • Safari 2.0.3
• Linux 2.6 kernel
  • Firefox 1.5

Requirements for OpenLaszlo 4.x and later

OpenLaszlo 4.x runs within browsers with the Flash 7, 8, or 9 Player installed, and directly within many browsers in native Ajax (meaning, roughly, any browser that supports ECMAScript v3, DOM Level 2, and CSS 2.1). As of OpenLaszlo 4.0 we have created a runtime compatibility table describing support levels for different potentially compatible runtimes. Only A-list runtimes are fully and officially supported by the OpenLaszlo community. Converting a B-list runtime to A-list status requires incremental engineering and QA investment; community members are encouraged to volunteer time and resources if they wish see the status of a particular runtime upgraded.

Server Requirements

OpenLaszlo is 100% pure Java and runs in server environments that provide:

• Java Runtime Environment (JRE) 1.4 or greater. Note that the OpenLaszlo Developer Kit requires the Java SDK, since Jakarta Tomcat, the servlet container that ships with it, needs the Java SDK.
• A Java Servlet container supporting at least version 2.2 of the Java Servlet Specification. This is only required for OpenLaszlo Core. OpenLaszlo Developer Kit ships with Tomcat 5.0.24.
• 175 MB of Free disk space.
• 512 MB physical RAM.
• 800 MHz or higher recommended.

Certified Application Server environments

OpenLaszlo has been tested for use in the following application server configurations:

In addition, OpenLaszlo has been reported to work with the Glassfish application server. This page contains further information.

Notes