QT is a very popular cross-platform framework. Its mostly used in Linux and other POSIX operating systems (but it also available for Windows and other non-POSIX

QT is a very popular cross-platform framework. Its mostly used in Linux and other POSIX operating systems (but it also available for Windows and other non-POSIX guys). QT is not like phonegap in the sense that is both a high level and low level framework for creating apps for the Desktop and Mobile using C/C++. Other bindings exist so that you can use QT from other languages such as Python. There is also QML which even though I have no experience whatsoever, I understand it to be a quick way to create an app using a declarative syntax not unlike a mixture of XML and a javascript-like language. I may be wrong on this one but I've heard that QML would appeal to Javascript fans.