Logwatch - Logwatch is a customizable log analysis system.
glogg - glogg is a multi-platform GUI application to browse and search through long or complex log files.
BareTail - BareTail is a real-time log file monitoring tool. Features Real-time file viewing
klogg - klogg is the fork of glogg - the fast, smart log explorer.
TAI .NET - .NET Framework 4.5 is a highly compatible, in-place update to .NET Framework 4.
Log Parser Lizard - Download this ETL log parser for automated SQL querying any text based data or system logs like Web Server logs, Windows System Events and application log files.