PowerGREP 

Quickly search through large numbers of files on your PC or network using powerful text patterns to find exactly the information you want. Search and replace with plain text or regular expressions to maintain web sites, source code, reports, ...
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LogWatcher 

LogWatcher is an advanced utility designed to search through Windows NT event logs to find certain keys that you define, and to execute special tasks when it finds them. LogWatcher also supports text-based event logs.
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AnalyseSpider 

Analyse Spider is a powerful log file analyzer software with a wealth of analysis to help you optimize your site, check out what Search engines are doing.
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