it has some negatives imho: No source for bits of it which makes it risky since it seems there's only one guy developing it. Looking at it's comms it seems pr

it has some negatives imho: No source for bits of it which makes it risky since it seems there's only one guy developing it. Looking at it's comms it seems pretty lightweight, though it does generate a lot of messages. Last time I looked the Sencha library it used was fairly old That said if you've got a low-medium weight web app you want to build and don't care if it looks like windows, then it's dead easy (really 1 day or so, it's that easy).