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Download OpenLaszlo License Freeware Size 56 MB Added 2010-09-02 Price $0.00 OS Vista, WinXP, Win7 Author Laszlo Support OpenLaszlo  Support

OpenLaszlo 4.8.1 is the recommended platform for all application development in the SWF8, SWF9,SWF10, and DHTML runtimes. OpenLaszlo 4.8.1 is an incremental release of OpenLaszlo 4, and contains almost 20 bug fixes (see the JIRA report 4.8.1 Release Notes for details). There are also two new features: an incremental compilation mode that made improve performance for SWF10 applications and a a compiler option that lets you store precompiled platform-specific object code for both the DHTML and SWF10 runtime in a binary library format.

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 4.8.1. 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.