Downloadable software for authenticating users in the field of home maintenance repair services provided through a network of selected independent contractors, installation, repair and maintenance of boilers, hot water heaters, hvac units, and household appliances, plumbing services, electric repairs, maintenance and installation of electrical wiring, outlets, light fixtures, and electrical panel, and extended warranty services, namely, service contracts; downloadable software for enabling single sign-on in the field of home maintenance repair services provided through a network of selected independent contractors, installation, repair and maintenance of boilers, hot water heaters, hvac units, and household appliances, plumbing services, electric repairs, maintenance and installation of electrical wiring, outlets, light fixtures, and electrical panel, and extended warranty services, namely, service contracts.

User authentication services using single sign-on technology for online software applications; providing user authentication services using single sign-on technology for online software applications; providing temporary use of online non-downloadable single sign-on software; providing temporary use of online non-downloadable user authentication software.