[Cigano]

I think it's difficult that the current state of things fall into stagnation. Firefox, for instance, still supports Gecko, which is open source too.

[amartya916]

True. Unfortunately, Gecko doesn't have the weight behind it that Webkit has and the most contributions to Gecko stem from Mozilla itself. Slightly off-topic: since a customer doesn't care what rendering engine they are using, I believe Firefox is making a mistake by not releasing a WebView based Firefox browser for iOS (like Chrome did). If only to provide tabs/booksmarks syncing.