[jeremie]

A pretty relevant article about what myself and temas are working on now: http://www.theverge.com/2013/12/4/5173726/you-have-too-many-...

IMO, interop/federation is going to be a tremendous long-term effort and include many standards, but is definitely feasible, inevitable even. There's a lot of innovation happening in messaging again thanks to mobile, we just need to start taking the best of what we've all learned already and work together to improve everyone's stack collectively.

[chrisballinger]

Layer seems interesting but I think the reason XMPP ultimately succeeded was because of federation and a healthy open source ecosystem. We are drafting a federated, minimal knowledge push server design for privacy-minded chat apps: https://github.com/ChatSecure/ChatSecure-Push-Server/tree/ma... (a little out of date)