Okay, so I was thinking about cross platform, right. People ask me about a client for MacOSX, Linux, even Windows CE. Java is out of hand, because it's ridiculously slow still, after all these years. It's was when I stumbled with Adobe Flex. This thing is amazing, you can deply a GUI application, in any browser, only using the Flash plugin! Now that's the perfect case for a cross platform development! And for my even greater amusement, Adobe AIR makes you able to create standalone desktop versions of the same deployed GUI that you see on the browser... now that's just, *almost*, flawless. The only issue was the GUI responsiveness, really slow, it appeared that I was using KDE on Debian (no hating). Mouse movement a bit skippy, and the GUI sometimes won't tell you that it's waiting, no 'hourglass' or anything. But the idea of making something pretty, pluginabble, and cross platform, made me almost lost my night of sleep, seriously.
The possibilities are extended to any Flash capable browser. At last, and not as a memory hog like Java, and the complicated jars, structures, and configuration files. Plain and simple, and with possibility to synchronize with a master database automatically, when online, and being able to work offline. Don't be surprise if I come up with something AIR + Flex related soon lol!