SQLyog MySQL GUI 

Superfast and compact Win32 Front End for MySQL. Execute multiple queries, export data in CSV, HTML & XML. Import from textfile. Export data and schema itself. Flush hosts/logs etc. Diagnose your databases and much more
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Remote Performance Observer 

Distributed system providing detailed information on computers in a network. It performs real-time monitoring of system-critical parameters making it possible to diagnose existing and potential bottlenecks on Windows 2000/XP computers.
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AdventNet ManageEngine OpUtils 

The AdventNet ManageEngine OpUtils is a comprehensive set of 40+ unique system and network monitoring tools. This web-based software helps IT administrators monitor, diagnose and troubleshoot their IT resources. OpUtils is web-based and very quick.
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Driver Genius Professional Edition 2005 

Powerful but so easy to use Windows drivers manage tool. Backup, restore, find, update, diagnose your device drivers.
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Capturix NETWorks 

Capturix NETWorks is a network utility software that ables you to test and diagnose all common problems from any network.
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Watchdog - O - Matic 

Watchdog - O - Matic will check and diagnose other programs. It will log all errors the other programs encounter. If the monitored application crashes or hangs, Watchdog - O - Matic will handle this and restart the application.
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