This seems to appear semi-frequently, but another promotion is back for a free standard version of HD Sentinel. Past promotions have included the professional version, but this works great if you want to just keep tabs on your HD health. The past promotions didn't include upgrades either. Everyone should use this or something similar to keep tabs on their drives. 

Note: For Windows OS 

The differences between Professional and Standard are essentially remediation, backups, scheduling tests... In terms of monitoring, there is no difference. Here's the matrix for their versions: http://www.hdsentinel.com/store.php


Link to Free Key / Software Download: http://www.hdsentinel.com/register-tipradar.php


From site:
To get your FREE registration code to unlock all functions and features of Hard Disk Sentinel Standard version, please specify your name and e-mail address and the 15-digit registration code will be immediately delivered to the e-mail address. Make sure to use valid e-mail address!


Installation and unlock instructions

To register and activate your product, please download and install Hard Disk Sentinel standard edition from the Download page (or directly fromhttp://www.harddisksentinel.com/h..._setup.zip ). After installation, click "Help" and select "Enter registration key" in Hard Disk Sentinel.

Please enter your name (or nickname) as username, the license code you will receive in e-mail and click on the "Register and activate on-line" button. Then the software should be registered and activated and can be used without limitations.



License information

The license code you will receive allows the use of all functions, options and features of Hard Disk Sentinel Standard version, without time limitations. Lifetime license: your version never expires and you can upgrade to all future versions for FREE. 


About the product: 
Hard Disk Sentinel (HDSentinel) is a hard disk monitoring software with support of HDD/SSD drives. Its goal is to find, test, diagnose and repair hard disk drive problems, report and display SSD and HDD health, performance degradations and failures. Hard Disk Sentinel gives complete textual description, tips and displays/reports the most comprehensive information about the hard disks and solid state disks inside the computer or in external enclosures (USB / e-SATA). Many different alerts and report options are available to ensure maximum safety of your valuable data.

The software monitors hard disk drive / HDD status, including health, temperature and all S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology, built in most hard disks and solid state disks today) values for each disks. Also it measures the disk transfer speed in real time which can be used as a benchmark or to detect possible hard disk failures, performance degradations.