Because of the increasing web services, users are required to manage a lot of account information. To resolve this problem, some single sign-on systems are proposed. However, these systems are cloud-based system. In this type, personal information is managed by a certain service. This situation has some risks. For example, if the service is closed, the user cannot use the system. And the personal information is managed on cloud server, which is a potential risk of information leak. This research proposes a single sign-on system that locates the personal information onto local machine and the information is managed by the user.