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Asked: 2026-05-27T03:51:31+00:00

I hear that HTML 5 is also useful for developing Rich Internet Applications. Can

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I hear that HTML 5 is also useful for developing Rich Internet Applications. Can anyone please explain the difference between the Adobe Flex and HTML5.

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  1. Editorial Team

    Can anyone please explain the difference between the Adobe Flex and
    HTML5.

    Big question. Adobe Flex is an SDK (Software Development Kit) that includes a User Interface Framework, a command line compiler and other tools. The output of an Adobe Flex application is either a SWF, which runs in the browser based Flash Player, or an AIR file which will run in conjunction with Adobe’s desktop runtime.

    Flex is part of Adobe’s Flash Platform. I’m going to quote myself to explain what the Flash Platform is:

    The Flash Platform consists of multiple deployment runtimes, development tools, and frameworks that are integrated across the full
    Adobe Creative Suite. Here is a list of some Flash Platform elements:

    1. The Flash Player: Flash Player is a browser plug-in which allows us
      to deploy web based applications to Windows, Mac, Linux, Android,
      and Blackberry.
    2. Adobe AIR: Adobe AIR is a runtime that allows us to deploy native
      applications to Windows, Mac, Android, iOS, and Blackberry.
    3. Flash Professional: Flash Professional is a tool for developing
      timeline based animations.
    4. Flash Builder: Flash Builder is an IDE to help programmer’s write
      advanced code.
    5. Adobe Flex: Flex is the Software Development Kit that helps
      programmers build, debug, and deploy Enterprise applications with
      the Flash Platform. Flex includes a UI Component library, a SWF
      compiler, a command line debugger, an application profiler.

    There are more aspects of the Flash Platform ecosystem, but I
    highlight these because they come from Adobe and are prominently used
    by Flash Platform developers.

    HTML5 is a spec for the next version of HTML. HTML is a markup language for building web pages. It includes some new aspects for dealing with video (Video Tag) and for creating animations (Canvas).

    HTML5, alone, is not a good choice for building Applications.

    However, when most people talk about HTML5 they also lump in JavaScript–which is a language used primarily for modifying a web browser’s Document Object Model–and CSS3 which provides advanced styling support for HTML5 elements. HTML5, combined with JavaScript and CSS3 can be a good choice for building the UI for a browser based mobile web application. HTML5 support on mobile devices is very consistent because the major mobile OSes (Android and iOS) use the same rendering engine (WebKit) in their respective browsers.

    On the desktop, more web rendering engines exist, and many people have older versions of the browser. Building an appplication, targeted for the desktop, with HTML5 technologies is not a decision I would make lightly, but it depends primarily on your audience.

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