KCachegrind visualizes traces generated by profiling, including a tree map and a call graph visualization of the calls happening. It's designed to be fast for very large programs like KDE applications.
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VisualMon is a concise dashboard for Java web applications, it shows statistics gathered by JAMon, reduced to the data relevant to the concrete web application and with a visually pleasant appearance.
Klsof is a frontend to the command line utility lsof.
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.
Eclipse-based software that enables the quality analysis and performance evaluation for the models of business processes (BPEL and BPMN).
TRAM (short for Trace Analyse Modules) is a collection of plug-ins for the sofware Tulip (see www.tulip-software.org), which is extended in this way to analyse and display traces (resp. trace-data).
log4js has moved to Github: http://stritti.github.io/log4js.
x4juli is an e(x)tension for(4) the (j)ava util(u) (l)ogging implemantion. It is a port of major log4j features (RollingFileHandler, PatternLayout, Filters). It includes a native implementation of "Jakarta Commons Logging" and "slf4j".