Meute is still very basic, but it can already help you build a server-less web app to which the user can connect their own backend at runtime. The code is on github.
NOTE: You need version 0.2 of sockethub, version 0.1 will not work!
You can try out meute by opening your web console now, and typing 'meute.' to see which commands are available. The full 0.7 API is described in the readme, but here is an example:
To run a butler service, type `meute.getButlerConfig();` while connected to remoteStorage and to sockethub and follow the instructions.