The operation and maintenance of websites or web services can't do without checking and analyzing the server logs. For this, many webmasters or administrators may have the very powerful and professional log analyzing tool from Microsoft - logparser (AKA: Log Parser, Microsoft Logparser) in mind. But Microsoft Logparser's command line interface can be a daunting challenge for many non-professional managers. Thereupon, some enhanced GUI tools for Microsoft Logparser such like Visual Log Parser GUI, Log Parser Lizard appeared.