Cross platform, stable, and with great feature web platform
If you don't mind moving out of your comfort zone, I would recommend Ruby on Rails (on top of Django and JSP).
We are a group of 2 C# programmers, which have experience in wcf web services, asp.net MVC 3, different architectural patterns, Inversion of control etc.
We have to implement a web site, which will run on Linux with minimum of 10k online users.
The problem is that it will run on Linux, and we don't know what language to choose, which is stable, maintained, free, cross platform, and reusable in business/desktop applications.
We think about Java servlets and Python's Django framework, are there other good frameworks?
Which one to choose, we are confused.
Thanks in advance.
EDIT:
What about the performance of JSP vs Django vs Asp.net MVC on Mono vs Ruby On Rails?