So TechCrunch confirmed that Facebook will be turning their application framework into an open-source project, meaning that pretty soon, anyone who wants will be able to host Facebook Apps on their own site.

The details are still scant at this point in terms of what features will be available and how it could/should/would be implemented.

But I'm guessing it's going to be pretty much exactly like OpenSocial.

With one rather enormous exception.

Facebook Apps rely on server components. To make Facebook Apps stupidly simple. A Facebook server makes a request to your server, your server returns markup and wawmo, you have a Facebook App. What you want your server to run is up to you. The Official (cue the Choir and sunrise) API is implemented in PHP, but has been ported to ActionScript, Ruby, Java, blah, da, blah, blah, blah.

OpenSocial requires no servers -- aside from the one(s) acting as the host/shell/container/whatever-you-want-to-call-it. So, in theory, and I guess, in practice, you could build an entire OpenSocial app with no server, relying completely on client-side Javascript. And really that's your only option.

Now, pros and cons aside, many have wondered whether Javascript is the wave of the Web X.0 future because of it's ubiquitous nature and nearly absolute install base.

If OpenSocial with its client-side glory comes out on top, it would go a long way in proving that is true.