GoAccess is a real-time web log analyzer and interactive viewer
Fast and Lightweight Logs and Metrics processor for Linux, BSD, OSX
AWStats Log Analyzer
Intelligently block brute-force attacks by aggregating system logs
ISC dhcpd leases usage analysis
Strong Email & Apache Log Analysis with Active Security Features
A multi-threaded, multi-database tcp-based database insertion app.
repair corrupted pcap and pcapng files
Snare Enterprise: bit.ly/Snare-Trial
Real-time traffic analysis for your website for 100% FREE
Open Source SIEM
A multi-platform universal log collector and forwarder
Log File Monitoring - Check Log Files, Analyze, Alert on any UNIX Log
Free-SA is report generating tool for web, proxy and mail log files
A RFC 5424 syslog viewer