Implement real-time collaboration on a page?

Question

I would like to create a web page that will allow several users to work together on the page. Imagine a web editor that allowed users to modify documents as an example of this type of function.

How would more experienced programmers begin to implement this, since I really can’t formulate any way to even begin work on this task. Will there be any programming libraries that simplify the implementation of this function or is it just too hard to even think of?

I create this webapp, primarily using GWT and SmartGWT, if that helps.

Thanks for any input you have.

Answer 1

There is really a comet-like library for gwt - http://code.google.com/p/gwteventservice/

Wiki: In web development, Comet is a neologism for describing a web application model in which a long HTTP request allows a web server to send data to a browser without a browser explicitly requesting it. Comet is an umbrella term for several methods for achieving this interaction. All of these methods rely on features enabled by default in browsers, such as JavaScript, rather than plugins other than the default.

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Answer 2

Etherpad.com - , . Google, . Etherpad.com .