GoAccess is a real-time web log analyzer and interactive viewer
Enhanced Apache Server Status page - for one or multiple servers
AWStats Log Analyzer
Strong Email & Apache Log Analysis with Active Security Features
Log analyser for Squid access.log
Real-time log monitoring in your browser
Snare Enterprise: bit.ly/Snare-Trial
Workflow Designer, Hive Editor, Pig Editor, File System Browser
linux tool to improve server security
Python WebServer Log File Analyzer
Free-SA is report generating tool for web, proxy and mail log files
Squid log data warehouse
Integrated to system status data based on the HDFS
Hadoop, Hbase, HBase Web Client, Flume based log analytics system