Introspect on running programme, view and alter object fields and methods. Edit the code of any method at runtime; apply the changes to any combination of objects, such as an array, or a complete class. Complete rewrite underway available Jan 2007.
Fitster is a graphical front end to the open source Fit testing framework developed by Ward Cunningham. (fit.c2.org)
Our goal is to create a platform independent interactive application aimed at testers to assist with the assembly and execution of Fit
A bug profiling and -reporting program/lib written in java. It enables implementing (java-)programs to generate meaningful reports in case of an error. They can be submitted (automaticly/dialog) by mail (text, html, bugzilla ..) without external programs
AppSignal starts at $23/month with all features included. No overages, no hidden fees. 30-day free trial.
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The beSee-2-x architecture brings JVM wide instrumentation for AOP systems, independant from bytecode kit (BCEL, Javassist).
A plugin is provided to instrument BEA WebLogic (v7) for tracing purpose (servlet->EJB->CMP->DB), with full JMX capabilities.
araSpect is a server side object inspector for web applications. Through a web interface you can drill down in your server side java beans. It is very easy to install and can be added to a deployed application. There is special support for Struts.