Open Source PHP Log Analysis Software for Linux

G.R.E.A.T. - Google Earth Reporting Engine and Analysis Tool The Goal of this project is to create a basic IDS interface with Google Earth. Currently generates a KML file of traceroute/whois information suitable for use in Google Earth

MySQL log analyzer and profiler. Extracts the most popular queries grouping them by their normalized form and shows the statistics for each group. Helps developers to recognize most frequently run queries to be able to optimize overall db performance.

IP2Location C library enables the user to find the country, region, city, coordinates, zip code, time zone, ISP, domain name, connection type, area code, weather, MCC, MNC, mobile brand name, elevation and usage type that any IP address or hostname originates from. It has been optimized for speed and memory utilization. Developers can use the API to query all IP2Location™ binary databases for applications written in C or supporting static/dynamic library.

using PHP (and some ShellScript) to protect your linux server against bruke force attacks(http://en.wikipedia.org/wiki/Brute_force_attack). also keep a log in MySQL and have email reporting

phpAwStats is written in PHP5 and is meant to parse AWStats logfiles and store them in a database for simplified reading and displaying. The main goal is to display the stats customized using templates on your webpage or on customer interfaces.

phpLogFacility is a log class for PHP (like log4j for java or the dead log4php projects here), which enables you to use an easy to use logging mechanism inside your console or web script without the need of ugly debug screen output.