[zeromq-dev] open source projects using zeromq?

[chris]

Hello,

I've been digging into zeromq and I am at the point where I'd like to continue
learning by working on an existing project that makes good use of zeromq.  I'm
not looking for example code, but rather an active project that is open to
patches and discussion.

So, what open source projects (preferably c/c++, not ruby) are out there that
make use of zeromq?

Thanks,

chris