[Matthias247]

If you want a higher-level cross-platform websocket layer between client and server you could also checkout WAMP (http://wamp.ws) as an alternative to DDP. You would need to implement some things on your own, but on the other hand it's more of an open standard and there are already multiple targets available.

[achipa]

Looks nice - Meteor natively speaks DDP so it makes most sense to use when talking to Meteor, but for other back-ends I will certainly consider WAMP! (no reason why this principle could not be applied to other back-ends hooking into the same WS powered Qt front-end)