elFinder

Sounds very interesting, we really didn't even think about websockets till this moment. Currently we are focused on the new version of elFinder and it becoming more stable and much closer to release each day, see this branch https://github.com/Studio-42/elFinder/tree/experimental.
New version will have much more advanced, faster and smoother interface, client side totally rewritten. PHP connector is also totally rewritten, but FM still will be compatible with elFinder 1.x connectors JSON API.

As I understand implementing websockets will require to change client code as well, am I right? - If so we will be glad to merge this changes into new version so it could be websockets compatible.

Thanks,

i'll keep a close eye on the new release. Websocket support will require clientside changes indeed. My use-case is an url-based websocket router, which uses a simple jquery plugin and some serverside logic(based on django/twisted) that's currently in the hwios project.

Specialy for you :) https://github.com/Studio-42/elFinder/commit/c8b4fe8bd21c9e640a05448b9f664bafa6bd38f5
You can ovewrite elFinder.prototype.ajax method. But I think its not so simple