This report gives an overview of the digital systems currently available on the international market that are suitable for the early detection of welfare and health problems in livestock. In addition to the functions and characteristics of the technologies, relevant literature on the validation of these systems – if available – is also listed. The systems were grouped according to the following enterprises: dairy cows, veal calves, fattening pigs, breeding sows, laying hens and broilers, dairy and meat sheep/goats. Because digital systems are constantly being refined, renamed and their functions undergo modification, the information listed may be incomplete and quickly outdated.