Reminds me of an app I saw in the late 90's developed with Delphi. I never used Delphi, but apparently it had the ability to compile an app to an ActiveX plug-in and run a full desktop-like application in Internet Explorer. Of course, ActiveX had major security problems, but the UX was amazing.
I was a heavy Delphi user back in the day (late-90's/early 2000's) it was way ahead of the curve in terms of RAD that didn't gimp you as a developer.
Shame they decided to go for the large enterprise insanely expensive end of the market, if they'd done a decent commercial version for a 10th the price they'd have done much better.
Though the writing was on the wall as the cost of development tools trended towards zero - JetBrains have continued to prove that if you provide enough utility competing against free can be profitable.
