log4js has moved to Github: http://stritti.github.io/log4js.
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.
iEmendo allows a PHP application to seamlessly report errors and/or exceptions to a remote server by utilising PHP's custome error handlers. The iEmendo website provides a Web 2.0 type interface with an AJAX based console to view log updates in realtime
Monitors webpages for changes and emails output with differences to subscribers. Permits user accounts and registration. PHP/MYSQL.
Webbased PHP Development Utility with planing, profiling and source control. [no release yet]
simpleWSMonitor will keep track of some values that nearly determine the availability of your webservers. It may help you find some bottlenecks from the server to your visitor and it's very lightweight, it doesn't even need a cron to work.
The PHP performance & profiling project aims to provide a free and easy to use set of classes to monitor and analyze PHP scripts and projects.
Carica CacheGrind is a profiling frontend for Xdebug. It provides a webservice and a webbrowser UI to access the data from your cachegrind files.
Sake is a PHP implementation of Polynomial Least Squares Regression. The algorithm takes data points as input and returns the resulting polynomial. Graphs can be made using any plotting package. Sake provides the polynomial and will compute as many point
This debugger for PHP gives you the ability to inspect and understand what is going on in your application.
Vogoo PHP LIB is a powerful collaborative filtering engine that allows Webmasters to easily add high personalisation features to their Web Sites.