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| Developer(s) | Laszlo Systems |
|---|---|
| Final release | 4.9.0 / October 21, 2010; 14 years ago (2010-10-21) |
| Operating system | Windows XP,Windows 7,Mac OS X Jaguar or later,Linux |
| Type | Web application framework |
| License | Common Public License |
| Website | www |
OpenLaszlo is a discontinuedopen-source platform for the development and delivery ofrich web applications. It is released under theOpen Source Initiative certifiedCommon Public License (CPL).
The OpenLaszlo platform consists of the LZX programming language and the OpenLaszlo Server.
LZX is anExtensible Markup Language (XML) andJavaScriptdescription language similar in spirit toXUL,MXML, andExtensible Application Markup Language (XAML). LZX enables a declarative, text-based development process that supportsrapid prototyping andsoftware development best practices. It is designed to be familiar to traditional web application developers who are familiar withHTML and JavaScript.
OpenLaszlo Server is aJavaservlet that compiles LZX applications into executable binaries for targeted run-time environments.
Laszlo applications can be deployed as traditional Java servlets, which are compiled and returned to the browser dynamically. This method requires that the web server is also running the OpenLaszlo server.
Alternatively, Laszlo applications can be compiled from LZX intoDynamic HTML (DHTML) or abinarySWF file, and loaded statically into an existing web page. This method is known as SOLO deployment. Applications deployed in this manner lack some functionality of servlet-contained files, such as the ability to consumeSOAP web services and Java RPC remote procedure calls.
OpenLaszlo is released under theCommon Public License by Laszlo Systems.
Laszlo-powered rich web applications have been deployed byEarthlink,[1]Verizon,Walmart,IBM WebSphere,Yahoo!,Behr,Pandora, La Quinta Hotels, DeanForAmerica.com and Time.gov.
Laszlo Systems, makers of OpenLaszlo, is developing their own software based on the Laszlo Presentation Server. One is a mail client (Laszlo Mail) which is similar toMicrosoft Outlook orMozilla Thunderbird, but which operates within the web browser. Another, called Webtop, is an integrated application environment for enterprise use.
Laszlo was founded by David Temkin.[2]
OpenLaszlo was originally called the Laszlo Presentation Server (LPS). Development began in the fall of 2001. Preview versions were released to select partners throughout 2002. Several of these were used for the first deployed Laszlo application, for Behr paint.[3] The first general release of LPS was in early 2002.
In October 2004, Laszlo Systems released the fullsource code to the Laszlo Presentation Server under theGNU General Public License (GPL), and initiated the OpenLaszlo project. In 2005, coincident with the release of version 3.0, the name of the Laszlo Presentation Server was changed to OpenLaszlo.
Timeline
The name Laszlo is ofHungarian origin. The project was named after the cat of Peter Andrea, a graphic designer and co-founder of Laszlo Systems. The cat, in turn, was named in honor of the Hungarianconstructivist painter and photographerLászló Moholy-Nagy.[6]
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