Although we are a very small company, we are very distributed—with people working in as many as ten different locations at the same time, we have to deal with some challenges that most small businesses rarely encounter. One of these is having to support a wide range of operating systems—most of our dev team is on OSX, and most of our customer care team is on several versions of Windows. The other is having to deal with a curious mix of requirements: access live data securely, comply with merchant security standards, print well-formatted documents (such as invoices), manage customers, upload all sorts of creative, handle news posts, and so on.

Our old system used an extranet for all these tasks. This worked well for the longest time, but the entire concept was beginning to burst at the seams; printing from a web browser was never easy, for example. File uploads are, for lack of a better term, painful to handle. In fact, the entire in-browser user experience doesn’t lend itself well to operations that require referencing multiple information screens at the same time (say, editing an invoice while looking at a customer’s record). Naturally, it is possible to visualize all the relevant data in the same screen, but then you have to deal with things like information overload and, well, the fact that you are presenting the same data in more than one way (which, in my opinion, is a major no-no of application design).

From a strategic perspective, a “classic” web-based application (of the non-Ajaxy variety) looks easy to maintain on the surface—but a simple cost/benefit analysis quickly reveals problems like decreased productivity and increased development costs when your programmers are trying to work around the browser’s limitations in order to give their users the tools they actually want—not to mention the cost in terms of mounting frustration on both sides.

When we started redesigning our technology, one of the big decisions that we knew we were going to have to make was replacing the management systems. Having decided that a plain-old website wasn’t going to do the trick, we eventually narrowed our choices down to four possible alternatives:

I have to admit that the native application was, for a short while, the front contender. There was a period of time when almost the entire company had (by accident) standardized on OSX, and applications on Macs are both a pleasure to develop and a pleasure to use. On the other hand, none of the developers had strong skills on OSX (or, for that matter, on any other operating system natively) and, of course, locking ourselves into a particular operating system seemed like a potentially expensive thing to do—what would happen if we were to hire someone who didn’t use OSX? We’d either have to purchase a new Mac, or scrap our application. Worse yet, there’s a good chance that we’d get used to the OSX app, so that replacing it might prove to be impossible (at least without inciting a riot), and we’d end up having to maintain two different applications.

The other almost-natural choice was some sort of AJAX-powered Rich Internet Application. We never seriously considered this solution, mostly because we thought that it would bring all the headaches of a GUI application without most of the benefits. AJAX is not a technology—and, therefore, there is no unified toolset on which we could standardize. For example, I use Safari almost exclusively, Sean prefers Firefox, Paul is known among our team as “the guy who files all those weird Opera bugs” and most of our customer care team is on IE.

Of course, we could force all our users to access our system using a particular web browser—but that would be silly; browsers are notorious memory hogs, and the level of complexity required by an AJAX application is only going to make things worse (just do a quick search for AJAX memory leak and you’ll know what I mean).

Finally, having dealt with browser quirks far more often than any of us cared to remember or admit, we weren’t about to get tangled into a web—pardon the pun—of badly-supported standards and inconsistent behaviour. AJAX was out.

By the time we started considering building our application using XUL, we were fast approaching the level of desperation that was bound to drag us all the way back to our plain-old-web solution.

I will spare you the weeks of misery, but the bottom line is that XUL is an acceptable solution only under three circumstances:

Unfortunately/luckily, we didn’t fit any of these categories. XUL is nowhere near ready to be used in a solid application outside of Mozilla unless you can get your hands on a good developer who has already been exposed to the technology, and those are hard to come by. Documentation for the project is sparse (and that’s being very generous), and the end result is just as much of a memory hog as Firefox.

Adobe’s Flex was the last technology we looked at—almost as an afterthought. We had, of course, heard about it (although at the time Adobe had not quite put as much of an effort into pushing it), but our combined prior experiences with Flash and Macromedia held us back considerably.

Then, something interesting happened: Sean rebuilt what it had taken him three weeks of XUL research and development in a little over one day using Flex 3 beta. I really wasn’t expecting anything nearly as quick—or as successful—and this made us take notice.

Flex and AIR are interesting technologies. They seem to have been designed with developers in mind in exactly the way that HTML/CSS and Flash were designed for… somebody else. Like XUL, Flex lets you lay controls over a form in a logical fashion without having to be too concerned about hacks, but unlike XUL, Flex is well documented and has a powerful IDE that is on par with the latest Visual Studio or XCode. Like Flash, Flex is based around a technology that is (relatively) lightweight and can be programmed using a language most developers are familiar with—ActionScript is, of course, very similar to JavaScript—without significant sacrifices in terms of performance. To give you an example, as part of our original platform tests, we built a prototype VNC client and a semi-working IRC client. These are both examples that have complex requirements (the IRC protocol is simple, but one does need to display the output in a pleasant way and provide a good interface for the user) and, at least in the case of the VNC client, are very intensive from a processing standpoint.

Coupled with AIR, Flex allowed us to build (in a matter of a few weeks instead of months) and deploy a whole new management system that can be installed (and developed) on any of the platforms we work with. Even in its current beta status, and with all the shortcomings that come with it, it is a very powerful development environment that combines most of the “cool” features of web applications and client-side GUI software in a package that uses technologies a wide range of developers are familiar with.

As testament to how good this approach to software development is, consider what happened last week, when we finally deployed our management console company-wide. Despite the fact that very little work had been put on creating a “visually stunning” interface, everyone, from customer support to shipping to the members of the dev team who had not actively developed it, was able to install the application and learn how it works in a matter of a few minutes.

Granted, we don’t do anything super-fancy. For the most part, the application fills forms and exchanges data with our service layer (powered by a super-simple, JSON-driven interface). However, this is true of most applications that can benefit from a technology like Flex—and, frankly, I wish Adobe would place more emphasis on this fact, which would open a significant market to them. Being able to develop MP3 players, word processors and time management tools with Flex is great—but the vast majority of potential users of the technology are more likely to have problems of the create-an-invoice type that need solving, and Flex is passing them by while they bang their heads against a wall trying to write HTML and CSS that makes printing decent documents possible (good luck with that). I will bet any amount of money that a developer can build a better interface with Flex—even without using the visual IDE—in a fraction of the time than it would take him to do the same in HTML, with the added bonus that the resulting code would be significantly easier to maintain.

You have heard me and my colleagues push Flex quite strongly of late. Naturally, Adobe is a client of ours, and so you’ll have to take what we say with the due grain of salt. At the same time, our enthusiasm is not fueled by sponsorship money, but by a genuine appreciation of what Flex has done for us, and by the fact that we believe that technologies like it are going to have a big impact on our industry if we give them an opportunity to.

Flex has the great benefit (for us) of being completely cross-platform—and its key components are even open-source (which, curiously, comes in very handy when you have to fix bugs in the framework). It is, however, not the only platform that is taking web development in the direction of sidestepping the browser in favour of an environment that is more conductive to a rich user experience. If Windows is your platform of choice for development, Silverlight may be a viable alternative, particularly if you already have the .NET experience required to take advantage of it (of course, Microsoft is also our client, so you’ll have to take that with a grain of salt, too!). 

Regardless of the tool, what you really can’t afford to do is ignore these technologies—if your business needs computer, they bring huge value to the table.