The best free alternative to Hard Disk Sentinel is CrystalDiskInfo, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Hard Disk Sentinel and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Hard Disk Sentinel are HD Tune, Victoria, smartmontools and Samsung Magician.
Open-source utility for monitoring S.M.A.R.T. data, disk temperature and more. Offers portable use, dark mode, no ads or tracking, and supports 30+ languages. Designed to provide an accurate health status and includes features such as temporary file deletion and file recovery options.
Japan
HD Tune is a hard disk / SSD utility with many functions. It can be used to measure the drive's performance, scan for errors, check the health status (S.M.A.R.T.), securely erase all data and more!.
Netherlands
EU
Victoria is a small application designed to assess performance, test and perform minor repairs to your IDE drive and SATA HDD. It's designed primarily for HDD repairmen in stationary conditions and is not intended to test the system hard drive.
The smartmontools package contains two utility programs (smartctl and smartd) to control and monitor storage systems using the Self-Monitoring, Analysis and Reporting Technology System (SMART) built into most modern ATA and SCSI harddisks.
Samsung Magician software is designed to help you manage your Samsung SSD with a simple, intuitive user interface. Download files and find supported models.
South Korea
HDDScan is a freeware utility for storage devices diagnostics (HDD, RAID, Flash). The program can scan storage device for bad blocks, show S.M.A.R.T. attributes and change some HDD parameters such as AAM, APM, etc.
Russia
Diskovery collects and displays the details of data storage facilities of the computer, including its physical drives, disk arrays, partitions, volumes and mount points.
United States
Scrutiny is a Hard Drive Health Dashboard & Monitoring solution, merging manufacturer provided S.M.A.R.T metrics with real-world failure rates.
HDDExpert gives you a crystal-clear vision of your Hard Drive (HDD or SSD) health and performance and translates S.M.A.R.T. attributes into readable indication.
FranceEU
HDAT2 is program for test or diagnostics of ATA/ATAPI/SATA, SSD, USB and SCSI devices.
CzechiaEU
SeaTools is a diagnostic tool that helps you determine the condition of the disk drive in your external hard drive, desktop or laptop computer.
IrelandEU
A SMARTHDD intended for troubleshooting and operation optimization of HDD and SSD storages. Allows adjusting characteristics of HDD and SSD by modifying the positioning speed of magnetic heads (AAM) and fine-tuning power consumption (APM).
