SpikeGadgets makes hardware and software for extracellular array recording.
They make nice looking hardware, both for recording from arrays, and for controlling experiments.
They sell a few accessories as well, including this commutator.
Their software is open source.
MATLAB and Python code is also part of the project.
The company’s run by Mattias Karlsson (worked with Loren Frank, UCSF/HHMI; Alla Karpova, Janelia/HHMI) and Magnus Karlsseon (formerly at NVIDIA).
Hat tip to Gabe Murphy (Allen Institute for Brain Science).