The French Open Science Monitor ( https://frenchopensciencemonitor.esr.gouv.fr ) is a tool for objectively and quantitatively measuring the progress of the Open Science public policy pursued in France. This tool, which is itself 100% open (methodology, code, and resulting data), is enriched by iteration with each annual edition. It currently provides indicators relating to the issues of open access to publications and PhD theses, APCs, the sharing of research data, and software, and the transparency of clinical trials. In addition to the national indicators, the French Open Science Monitor can be adapted to the level of each establishment that so wishes, providing it with a personalized dashboard that is consistent with the national measures.