OpenBSD/armish runs on various ARM-based appliances, using the Redboot bootloader (and which boot Linux by default).
A mailing list for ARM-based ports is available at firstname.lastname@example.org. To join the OpenBSD/arm mailing list, send a message body of "subscribe arm" to email@example.com. Please be sure to check our mailing list policy before subscribing.
OpenBSD/armish is the 3rd OpenBSD port to ARM based machines, after cats and zaurus. It is intended to support a variety of rather similar ARM-based machines:
Development is currently pretty active.
The latest supported OpenBSD/armish release is OpenBSD 5.4. Here are the OpenBSD/armish 5.4 installation instructions .
Snapshots are made available from time to time, in this location as well as in a few mirrors. Here are the OpenBSD/armish snapshot installation instructions as well.