FLicKeR 

Via a very intuitive interface, you simply tell it to read a text file and keep or remove certain lines that contain the text you specify. One of its most useful applications is that it makes the process of evaluating log files easier.
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Log Analyzer 

Log Analyzer is a professional log file analysis and spider visits tracking tool. The program analyzes Web server log files and presents your Web site usage statistics in comprehensive graphs and tables
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See Whos Linking 

Scan your website log files for people that link to you. Automatically browse to the pages that link to your site through the in-program browser.
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LogRover 

LogRover is an advanced web log file analyzer that analyzes log files generated by IIS, Apache and other web servers. LogRover generates comprehensive reports of page hits, sessions, visits, visitors, search engine referals, and session times.
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Web Log Mixer 

Merge and compress your ftp or web log files into a single file. Most log formats are supported as long as log files compressed with zip, gzip or bzip2. The program works as a GUI or command line utility, configuration files are in plain text format.
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VorteXML 

VorteXML quickly and easily transforms existing structured text data output such as reports, invoices, log files and HTML generated from any computer system into valid XML using any DTD or Schema.
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