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OpenLaszlo 4.9.0 (Recommended Release for SWF8, SWF10, and DHTML Development)

We're experimenting making our releases available by BitTorrent. In the table below, the corresponding .torrents are linked. If you run a bt client, help spread the word by grabbing them all and making them available. Thanks!

Release Notes Windows
Win 7/XP
MacOS
MacOS X>=10.2
Linux
Unix
Dev Kit
Any OS
Servlet Source
4.9.0
21-Oct-2010
Download (56MB)
Installation Notes
Download (61MB)
Installation Notes
Download (62MB)
Installation Notes
Download (58MB)
Installation Notes
Download (34MB)
Installation Notes
Download (62MB)
Build Notes
    BitTorrent BitTorrent BitTorrent BitTorrent BitTorrent BitTorrent

OpenLaszlo 4.9.0 is a significant release along the path to OpenLaszlo 5.0, which is the upcoming release with newly redesigned components. OpenLaszlo 4.9.0 contains over 160 bug fixes and implements the infrastructure to support the new components. It also provides new features for creating and deploying mobile applications. See the OpenLaszlo release notes in JIRA for details. OpenLaszlo 4.9.0 is the recommended platform for all application development in the SWF8, SWF10, and DHTML runtimes.

For those of you who have already upgraded your applications to OpenLaszlo 4.2 or higher, no further work is needed. You should just start using OpenLaszlo 4.9.0. However, if your application is based on an older version of OpenLaszlo, then you must modify your code to take advantage of the SWF9/10 performance gains and to meet the much stronger typing requirements that it mandates.

To migrate your 4.0.X or 4.1.1 applications, we strongly suggest that you refer to this wiki page: Runtime_Differences. This page discusses the changes required by SWF9 and also provides a methodology and conversion scripts to assist you in upgrading your application. It is very important that you run the automated conversion scripts in the recommended order, should you choose to take advantage of them.

OpenLaszlo Latest Nightly Builds

We're experimenting by making internal point releases available for download. These are NOT fully qualified. They are somewhat tested and we have found them useful milestones in our development. They are NOT production quality. They may, however, have bug fixes that you need. Trunk is our development branch and the absolute edge with daily changes. Thanks!

Release Notes Windows MacOS Linux
Unix
Dev Kit Servlet Source
5.0b2
15-Nov-2012
Download (56MB)
Installation Notes
Download (61MB)
Installation Notes
Download (62MB)
Installation Notes
Download (58MB)
Installation Notes
Download (34MB)
Installation Notes
Download (62MB)
Build Notes
OpenLaszlo Latest trunk branch nightly releases are available here

Software Packaging Information

OpenLaszlo software is available for download in the following configurations. (Versions of the OpenLaszlo platform prior to OpenLaszlo 3.0 were called the Laszlo Presentation Server or LPS.)

  • Development Kits for Windows, Mac, Linux, and Unix: These packages are binary distributions with installers for specific platforms and include the Tomcat 5.0.24 servlet container. Development kits also include the documentation, sample code, demonstrations, and Laszlo in 10 minutes tutorial code.

  • Development Kit for Any OS: This package is a development kit without the Tomcat servlet container. Choose this package if you wish to deploy OpenLaszlo into an existing Java Application Server or in your own servlet container, such as IBM WebSphere or JBoss.

  • Servlet Only: This package contains only the servlet, the smallest set of files required to deploy an OpenLaszlo application on any OS running Java. If you want a local copy of the documentation, including live examples, you should download one of the OS-specific development distributions. When you are ready to deploy, you can do so using the servlet distribution.

  • Source Code Distribution: This package provides all of the source code, docs, examples, and supporting collateral necessary to build OpenLaszlo. Use this distribution to extend OpenLaszlo, customize it for your application, and to contribute to the OpenLaszlo project.

OpenLaszlo (and previous LPS release versions 2.2 or higher) are released under the Common Public License (Version 1.0). The third party software components that are distributed with OpenLaszlo (and LPS) are released under their own license terms and conditions. OpenLaszlo also provides system requirements and certified application server environments to ensure a successful deployment.