Michael Mahemoff recently wondered about whether Bespin will ever have more than one back-end. That’s a good question! We’ve waffled a bit ourselves on the back-end bit. The initial back-end was Java, but we migrated to Python. Michael pointed out that we’d need to solidify and publish the API for alternate back-ends to be viable.
At our launch, we documented the server API, but we’ve changed it a touch here and there since. We need to keep the Wiki up-to-date. But in addition to our back-end, there is MobWrite, which powers the collaboration engine. MobWrite’s protocol is documented, but we’ve altered it a touch and published our alterations as well.
If you’ve an interest in implementing a back-end server, please do let us know and we’ll put more effort into updating the published documentation.
Ben Galbraith 