GSmartControl is a graphical user interface for smartctl (from smartmontools package), which is a tool for querying and controlling SMART.
License: Open Source
GSmartControl is a user-friendly tool primarily focused on drive health monitoring and performance analysis, making it ideal for general users looking to assess their drives. In contrast, MHDD is a powerful low-level data recovery tool that requires more technical expertise, focusing on advanced diagnostics and recovery options.