For comparison as an alternative to the MidiHub, in addition to the BomeBox hardware, there is also the Sipario from Lab4Music.
It has two DIN MIDI ins and two DIN MIDI outs, plus one USB port that can be configured to be either a USB host or a USB device port. (You need a special USB cable.) It has a color touch screen, which allows you to set up a variety of functions and select between them, that can be used in performance. The Sipario is quite diverse in it’s programmability.
Comparing the three (MidiHub, BomeBox, Sipario) across all their functions is complicated in detail, and should be considered relative to your specific application needs. There are significant differences between them.
One advantage to the Sipario over the other two is that it needs no external computer to program it. The programming can be done entirely with it’s built in touchscreen.
For a fourth alternative, you also can use a Raspberry Pi computer with suitable interface hardware and software.
Comparison of MidiHub, BomeBox, and Sipario programming interface.
MidiHub
BomeBox
Sipario Touch Screen
Prices:
MidiHub (pre-order) $130 (or so)
BomeBox $225
Sipario $320
ADDED (Sept 11): There’s a new competitor similar to this, just now up on Kickstarter. It’s from Conductive Labs, the maker of NDLR. It’s called MRCC (Midi Router Control Center). It’s likely to be priced somewhere around the BomeBox. See this Elektronauts thread.
ADDED: (Sept 15th): Actually the MRCC is set to retail at $350, even more than the Sipario!
ADDED: (Jan 28, 2020): There is a new expanded version of the Sipario in the works!