| Hot CPU Tester | | A burn-in stability tester to tests all components for intermittent errors. |
| MemMXtest | | A free (GPL) advanced memory tester that runs on any MMX PC. |
| Memtest86 - Memory Diagnostic Program | | A free memory test program for x86 (PC) computers. Stand-alone diagnostic program that fits on one bootable floppy. Linux and Windows versions available with source code. |
| Memtest86+ | | A free, up to date memory advanced diagnostic utility based on the original Memtest86. |
| Micro 2000 Inc. | | Software, hardware and training materials for PC diagnostics, troubleshooting and repair. Micro-Scope or Microscope PostProbe and training A+ certification courses. |
| Micro2000 Inc. | | Offers PC diagnostic toolkits and complete solution suite application Micro-Scope and Burn-In and RemoteScope for networking administration solutions. |
| Modem Doctor Diagnostics | | A tool for finding and correcting many common configuration and installation errors with modems and UARTs. MS-DOS and Windows versions available. |
| PC Bug Doctor | | Offers free software download to scan a PC for errors. PC Bug Doctor will fix all types of windows errors. |
| PC Certify Diagnostic Software | | PC Certify Diagnostic Software provides advanced system and device configuration reporting, quick tests,diagnostic testing for Computer Repair Technicians |
| PC Certify, Inc. | | Makers of PC diagnostic software, system configuration, troubleshooting, burn-in testing, and POST boards for PC builders, maintenance, resellers, consultants, and IT education. Free evaluation. Also providers of Data Recovery Tools and Certification Training. |
| PC Diagnostic Utilities | | PC diagnostics and system information software, provides diagnostic software to OEM PC manufacturers and service support professionals. |
| PC Diagnostics and Computer Training Tools | | Millennium Solutions provides info on the full range of micro2000 PC Diagnostics Software and Hardware and Computer Training courses. Learn to build, repair, maintain and diagnose problems with computer hardware. |
| PC-Doctor, Inc. | | Developer of PC diagnostics and system information software, provides diagnostic software to OEM PC manufacturers and service and support professionals. |
| ProTech Diagnostics | | Provider of hardware and software for PC diagnostics, hard drive data recovery, CPU speed and performance tests. |
| RAMspeed | | a free open-source cache & memory benchmark, with numerous features. |
| Reseller | | for Micro 2000 and other diagnostic and data recovery products |
| SANtools, Inc. | | Utility that monitors the disk hardware with the goal of identifying disks that have a strong possibility if crashing. Supporting, Windows NT/95/98/2K/ME (Intel-based) running SCSI, Fibre Channel, SSA, or IDE disk drives. |
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