Everest Home Edition 2.20 (www.lavalys.com):
Everest home edition is a freeware system information, system diagnostics and benchmarking. It offers the world's most accurate system information and diagnostics capabilities, including memory benchmarks, hardware monitoring, and low-level hardware information.
New features:
- Advanced hardware monitor with OSD panel and cooling fans monitoring
- Real-time alerting for hot-plug devices
- Portable Computer page to display mobile PC related information
- Bluetooth PAN support
- File Scanner filtering
- User benchmark results manager
- Sharpness test (Monitor Diagnostics)
Limitations: Lavalys has discontinued the free edition. This is unsupported.
It words on Windows 95, Windows 98, Windows ME, Windows 2000, Windows NT, Windows XP. File size: 3,98 MB.


HDD Health v. 2.1 Build 159 (http://panterasoft.com/):
HDD Health is a full-featured failure-prediction agent for machines using Windows 95, 98, NT, Me, 2000 and XP. Sitting in the system tray, it monitors hard disks and alerts you to impending failure. The program uses Self Monitoring and Reporting Technology (S.M.A.R.T.) built into all new hard disks, and can predict failures on your hard drives. A host of alerting features include email, local pop-up messages, net messages, and event logging, while using no system resources.
It works on Windows 95/98/ME/2000/NT/XP. File size: 429 KB.

DTemp v. 1.0.0.34 (private.peterlink.ru/tochinov):
DTemp monitors the temperature of your hard drive to help prevent data loss. Using S.M.A.R.T. technology included in all modern hard disks, this program displays its current temperature. The temperature can be displayed in Celsius or Fahrenheit and temperatures above a (configurable) critical level can be displayed in another color. Further, DTemp can display a lot of information about your hard drives, e.g. firmware revision, transfer modes and drive features (A DTemp tutorial is available at this link). No installation required.
File size: 133 KB.