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   About XUL, XAML and Laszlo

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After more examination of XUL, XAML and more recently of Laszlo It appears that XUL is not closely related to XAML, in fact, both systems are far from being close. I would say though that XAML is closer to Laszlo than to XUL.


These two systems even if close in terms of visual capabilities are different in terms of code packaging:

-          XAML requires a .net environment to be installed on the client but do not necessarily requires anything on the server side.

-          Laszlo requires an interpreter on the server side and the flash plug-in to be installed on the client. Millions of clients already have a flash interpreter installed on the client.


It seems that compared to W3C DOM model + HTML, Laszlo has the advantage to run the code in both Netscape/Mozilla and Internet Explorer environments without any modifications. This is not the case with “standard based” document designed in accordance with W3C specs.


A similar environment to Laszlo could also be developed in SVG using, for instance an SVG plug-in but there are no higher level declarative languages available. SVG itself is too low level to be an economical declarative language. I have not seen yet any environments resembling Laszlo in terms of functionalities on top of SVG. Does anyone know about any environment offering a declarative language on top of SVG?



Didier PH Martin




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