>>LOL, yes. Just to clarify though - the screenshot shows 4 windows (but can be any number) inside a browser tab. Users can add, remove, resize windows to suit and switch tabs containing other unrelated website URLs etc. Changing the browser size has no effect on the contained windows of the website. The website is truly a 100% web-based solution, not a local desktop based solution. Nothing is running locally on the users machine; the whole thing is running off our server and just displaying content inside mutiple, interactive, user-definable windows which can contain charts or tables or whatever content the user chooses and all running inside a browser tab. All the windows are seperate objects being updated independently from each other but just displaying inside the same tab. There are no security issues other than on the server which naturally needs to be secured as per any website.

Understood- my first classical Web app was released last century(!)

Wrt your reference to "browser tab", our experience was that the tab needs to be sized across 2 or more monitors if we wanted to distribute its contents across 2 or more monitors. The issue arises when you also want other apps including email and Messsenger between app panels, as customers say they want all the time.

IME browser apps (and device apps) are more attuned towards a single Window and inter-window communication is problematic, e.g. if a hacker can get something into an off-screen Window snooping on your online banking session, which was one of the risks why MS said they blocked the technique we used. Like you, we've gone to some trouble to offer a windows alternative. - J