A tool for finding and correcting many common configuration and installation errors with modems and UARTs. MS-DOS and Windows versions available.

AMIDiag Suite is a PC diagnostic utility that offers a complete answer to system administrators, service technicians and end-users. The Suite includes both the Windows and DOS PC diagnostics programs. News, downloads, support, and product upgrades.

PC Sentry Check Kit includes program and board for troubleshooting dead PCs.

Company provides quality diagnostic hardware and software for PC manufacturers, maintainers and IT departments. Products include the SIMCHECK memory tester for DIMMs and SIMMs and PCTESTPRO diagnostic kits.

Detects and provides information about all computer hardware. It also provides benchmarks of the processor, memory, hard disks, CD-ROM and the video adapter.

Free or Open Source diagnostic tools for the x86 platform.

Software and hardware diagnostic and test tools for the field service professional. SCSI, Fibre Channel, IDE, and USB analyzers and testers.

Health check, security erase and other tape tools for backup media for Windows. Offers product description, screenshots, demo, ordering info.

Quality assurance tools to monitor the quality of tape media and prevent backup errors. Offers product info, trial, downloads, support area. [Windows]

Free open source x86 processor information retrieving tool for UNIX-like and DOS/Windows systems. Project info, downloads, examples.