Apparatus and methods are described for coordinating user credentials across multiple disparate credential stores. A synchronizing engine requests and receives past and present credential information from the disparate credential stores. Users indicate which, if any, of the credential information they desire to synch together. Upon common formatting of the credential information, comparisons reveal whether differences exist between the past and present versions. If differences exist, the information is updated. In this manner, users link together various passwords, keys or other secrets to maintain convenience from a single point of control, such as in a single-sign-on (SSO) environment, regardless of the disparateness of the stores. The reverse is also possible such that linked credentials are accessible from the multiple stores. Retrofitting existing SSO services is another feature as are computer program products and computing network interaction. User or enterprise policies are also used in governing these credentials.