Data analytics company CB Insights recently published two brief articles that describe quantum computing investments by corporations and startup companies.   Although the reports do not show any activities at universities or non-profit research centers and they may not show every commercial effort going on, particularly the new ones, they do provide a quick listing of many of the ongoing efforts.

The first article is titled 18 Corporations Working On Quantum Computing and you can find it here. The second one is titled Quantum Computing: 17 Years Of Major Startup Financings In One Timeline and you can find it here.