LibreDiagnostics
A desktop utility for real-time hardware monitoring and diagnostics.
...S.M.A.R.T. data of your drives
You can show various S.M.A.R.T. attributes of your drives, such as health, temperature, power-on hours and more, by simply clicking on the drives name in the drives monitor.
Please check out Github for more details and up-to-date new releases / versions !
https://github.com/Blacktempel/LibreDiagnostics
For Linux users:
you currently have to build the binaries by yourself and functionality may be limited.
There are plans to improve this in future, but not on high priority.