In this paper, we introduce some analysis tools for switched and hybrid systems, We first present work on stability analysis, We introduce multiple Lyapunov functions as a tool for analyzing Lyapunov stability and use iterated function systems (IFS) theory as a tool for Lagrange stability, We also discuss the case where the switched systems are indexed by an arbitrary compact set, Finally, we extend Bendixson＇s theorem to the case of Lipschitz continuous vector fields, allowing limit cycle analysis of a class of "continuous switched" systems.