MQTT Java or C# server

Question

Is there any known Java or C# server implementation of MQTT that is possible to use in commercial point of view?

Answer 1

I don't know of a server implementation in either of those languages at this time, but IBM provides WebSphere MQ which supports MQTT clients (and ships both Java and C clients) - since you mention a C# server I assume you are looking for a Windows-based server and WMQ can certainly run on Windows. Is there a specific reason why you are looking for server implementations in those languages?