HDD Guardian 0.7.1 free download, safe, secure and tested for viruses and malware by LO4D. HDD Guardian for Windows 32-bit/64-bit (latest version 2021).
The top open-source alternatives to HDD Guardian
are smartmontools.
One of the criteria for ordering this list is the number of mentions that products have on reliable external sources.
You can suggest additional sources through the form here.