Nios Open Source Alternatives?

What is wrong with NIOS II/e (economy)? It is free ...

http://www.altera.com/devices/processor/nios2/cores/economy/ni2-economy-core.html

OpenCores OpenRISC would probably be the next core I would look at ...

There's also an FPGA-based Arduino board I saw recently that uses an AVR core

http://papilio.cc/

That core is also from OpenCores.

I've not used these cores, so cannot provide positive or negative feedback.

Cheers,

Dave