Fast and Lightweight Logs and Metrics processor for Linux, BSD, OSX
AWStats Log Analyzer
Intelligently block brute-force attacks by aggregating system logs
Log analyser for Squid access.log
ISC dhcpd leases usage analysis
Enhanced Apache Server Status page - for one or multiple servers
Strong Email & Apache Log Analysis with Active Security Features
repair corrupted pcap and pcapng files
Snare Enterprise: bit.ly/Snare-Trial
Open Source SIEM
Build custom filter for your network based off of common communication
Python WebServer Log File Analyzer