Vibrations emanating from machines can be detrimental to human health and well-being. Aside from that, vibrations increase safety hazards in machinery, buildings and installations. The primary goals of vibration insulation are to restrict the effects of vibrations on people to within reasonable limits and to protect sensitive apparatus and safety systems from excessive stress from vibrations. Software ISOMAG 1.1, a further development of ISOMAG 1.0 was created in research plan. The most important modification is the possibility to change the program language from German to English and vice versa (German research report see Fb 943. Besides the single vibration insulation, interpretation and calculation of double one as well as consideration of dynamic properties of the position are also possible. The main purpose of the program is to design and optimise vibration insulation in machine and apparatus setups (secondary vibration protection). Interactive graphics are used in the program operation, model description, and data input and output. Linkage to a database permits rapid and certain acceptance of the characteristic quantities of the vibration insulators. The program supports the user in making a suitable selection and arrangement of vibration insulators. It calculates the quantities that are relevant for the evaluation - quantities such as characteristic frequencies; forces; vibration paths, velocities and accelerations; as well as amplification functions. It also monitors the observance of limits values. The user receives meaningful results with the lowest possible expenditure of preparatory work and model description. New: There is an update of the program with new features (Fb 1014).