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. http://www.modemdoctor.com/

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. http://www.santools.com/index.html

Ultra-X, Inc. Hardware and software tools for PC diagnostic and troubleshooting. Products include PHD, PCI, and QuickTech Pro. http://www.uxd.com/

BelAsset PC hardware and software discovery in your web browser. Freeware and corporate licensed versions. http://www.belarc.com/BelAsset.html

#1-PC Diagnostics Company Developer of PC diagnostics tools. #1-TuffTEST runs automatically or can be scripted. #1-TuffTEST-Pro is menu-driven for complete and precise testing control. Both are operating system independent and self-booting. A free feature-limited version is also available. http://www.tufftest.com/

Charles Cazabon's Memtest A free utility for testing memory. It is GPL-licensed and will work on Linux or any other Unix-like OS. http://www.qcc.sk.ca/~charlesc/software/memtester/

Micro 2000 Inc. Software, hardware and training materials for PC diagnostics, troubleshooting and repair. Micro-Scope or Microscope PostProbe and training A+ certification courses. http://micro2000.com/

American Megatrends, Inc. AMIDiag is a full feature PC diagnostic tool. OEM customization is available. http://www.megatrends.com/

Enterprise Corporation International Company develops software technology for CD Recorders and Optical Storage. Offers DriveEasy CD Diagnostic Software and Disc Inspector is a powerful CD-R/W media testing application. http://www.eciusa.com/

CDi Communications, Inc PC Sentry Check Kit includes program and board for troubleshooting dead PCs. http://www.netwind.com/html/diagnostic_tools.html

Ontrack Data Advisor Diagnostic Software This diagnostic program will quickly assess the health of a hard disk drive and memory (RAM). It will also list various options for recovering any lost data. http://www.ontrack.com/

CST Inc DocMemory PC Memory Diagnostic is a stand alone program. CST Inc also makes hardware memory testing systems. http://www.simmtester.com/

3B Software SANDRA Pro is benchmarking and diagnostic program. [Windows 95/98/ME/NT/2000/XP] http://www.3bsoftware.com/

Data Depot Inc PC Clinic diagnostic program. Hardware tools also offered. http://www.datadepo.com/indexstart.htm

Expodata Systems 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. http://www.pctestpro.com/

System Analyser Detects and provides information about all computer hardware. It also provides benchmarks of the processor, memory, hard disks, CD-ROM and the video adapter. http://www.sysanalyser.com/

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. http://www.memtest86.com

MemMXtest A free (GPL) advanced memory tester that runs on any MMX PC. http://panic.et.tudelft.nl/~costar/memmxtest/

ScanCD check your CD for unreadable files ScanCD check your CD for unreadable files http://scancd.pisem.net

BenchmarkHQ Archive and news site for benchmark and sysinfo software. http://www.benchmarkhq.ru/