(Inspired by similar question on Haskel)
There are several web frameworks for Erlang like Nitrogen, Chicago Boss, and Zotonic, and a few more.
In what aspects do they differ from each other? For example:
- features (e.g. server only, or also client scripting, easy support for different kinds of database)
- maturity (e.g. stability, documentation quality)
- scalability (e.g. performance, handy abstraction)
Also, what are examples of real-world sites / web apps using these frameworks?
EDIT: Starting a bounty in hopes that it will get some conversation going