Indeed. There were over two dozen minicomputer manufacturers at the peak in the early 1970s in just the USA. I don't know off the top of my head, but I imagin

Indeed. There were over two dozen minicomputer manufacturers at the peak in the early 1970s in just the USA. I don't know off the top of my head, but I imagine there were just as many in Europe. Most of the machines and their software are entirely lost to history at this point, with the companies bankrupt or dissolved and documentation and hardware all scrapped.