In this paper, we present SP Manager as an innovative tool for managing software products in small and medium independent software vendors (ISVs). This tool incorporates the operational software product management (SPM) processes focused on requirements management and release planning. By using situational method engineering techniques, the tool is easy to adapt to a specific company context. In addition, by making it possible to integrate the tool with the development platform, the tool is easy to deploy and adopt. The expert validation of this tool indicates that the included development concepts, such as the integration of SPM with system defect management, provide additional advantages to other SPM tools in the market.