GSmartControl is a graphical user interface for smartctl (from smartmontools package), which is a tool for querying and controlling SMART.
License: Open Source
DriveDx offers a more comprehensive suite of features aimed at drive health monitoring and performance analysis, making it ideal for users who need detailed insights and alerts on their disk's status. In contrast, GSmartControl provides a lightweight, open-source alternative that excels in basic diagnostics and is suitable for more tech-savvy users looking for a no-cost solution.