Photon counting at the rates modern sources demand, in a package that drops into an existing setup.
PhotonPix counts photons at rates up to 100 MHz and beyond, and is designed to drop into an existing setup rather than replace it.
The PhotonPix User Manual covers this in full; the short version is four steps.
Counting experiments where the source is bright enough that a conventional counter saturates.
PhotonPix Control configures the module and reads it out. The user manual is rendered from its Word master.
Tell us about your setup and what you need to measure.