Is there easy standart way to take open source program and port it to web to make in accessible and usable from everywhere?

Is there easy standart way to take open source program and port it to web to make in accessible and usable from everywhere? If there are no general way to do it then how could I port GIMP. Or for example wrap photoshop in web interface.

I noticed that usially sites use flash but may be it is not right answer because Apple apparently do not use flash.