We describe an approach for mobile and personalized use of electronic services that meet very high requirements on openness, user control, and mobility. The design is centered on the concept of personal service environments. These offer users mobile and network independent access to services from many different types of devices. The concept also allows services to interact locally. This can be used in several ways: services can for example share information but also make use of each other's services. In particular, we want to use this to support service personalization. The design has been successfully implemented and tested with a number of sample services and in several related research projects. This implementation, the sView system, is described.