Fast and Lightweight Logs and Metrics processor for Linux, BSD, OSX
ISC dhcpd leases usage analysis
repair corrupted pcap and pcapng files
Snare Enterprise: bit.ly/Snare-Trial
Open Source SIEM
A multi-platform universal log collector and forwarder
Free-SA is report generating tool for web, proxy and mail log files
Logs IP to IP contact, number of packets, bytes.