To perform quality home care work, care actors (formal and informal) have to collaborate and coordinate their practices. In this article, we present the prototype of the "CARE" application that we are developing to help care actors collectively manage patients' conditions at home. This application facilitates the collaboration among care actors by providing a global vision of the patients' trajectory, a discussion-based documentation, and an open indexation of the documented information. The first feedback confirmed the prototype pertinence for collaboration among a variety of self-employed health and care actors providing home care services.