I know The Dude runs on Linux through wine but will it run on a ARM device like Raspberry Pi? I am looking at a cheap device I can use to display The Dude on a TV without having to use a huge computer, I figured it might work on RPi. I just want to find out if anyone has tried this before I dish money out for one.

Forget it. Wine only implements Windows API, it does not emulate CPU. There seem to be some ideas (http://wiki.winehq.org/ARM) involving QEMU, which does the emulation, but don't count on it to ever work and be actually usable on RasPi. That device is far from fast even without emulation.

On the other hand, if MikroTik ever decides to release native Linux Dude (there should not be any major technical obstacle, at least for the server part, because that already exists as RouterOS package, i.e. native Linux binary), they could as well compile it for RasPi (Raspbian) too. That would not help you, because for display you need the client part. But I'm sure someone else would like it. I would for sure. But I don't really expect it to ever happen.

This topic is from 2013, we are in 2017 now. Is The Dude already running on a Raspberry Pi?

Indeed I'm looking for a easy, simple device to add to my network to monitor about 11 to 12 Mikrotik devices. A Raspberry Pi would be a good option.

Any thought, feedback?

No.
Old dude server runs on Windows and new runs on ros only.

Thanks for the feedback. No problem that The latest Dude SW runs on ROS. What would be a good, stable and cheap device to monitor about 12 Mikrotik devices? It was suggested that the RB 750r3 is a good device but there are some issues that it is not keeping the log file after a reboot. Any other good device? Who has good experience with The Dude on a Mikrotik device and which model?

It looks for me that dude 6 is not still mature enough to be reliably used. Therefore I still run 4b3 for production and trying time to time the 6.xx on chr. For dude you need enough memory and fast flash drive to store the database. For testing or playing with it the virtualized chr is the most affordable solution.