Method for managing IT applications by the operating system of a multi-computer system applications

The invention concerns a method for managing computer applications by the operating system of a multi-application system wherewith a user is provided. It consists in providing in the operating system a mechanism for: a) creating at least two environments enabling the user to access groups of applications corresponding to each of said environments; b) defining a combination of keys enabling the user to shift from one environment to the other; c) detecting to which environment corresponds each of said resident and future applications; d) classifying each of said applications in the environment corresponding thereto.