JMonitoring and NMonitoring are monitoring frameworks for Java and .Net applications, based on AOP (AspectJ and AspectDNG). Data are stored in database, memory or XML and can be consulted with a web console. http://forge.octo.com/confluence/display/JMO
A static analyzer for Java programs that checks for design guidelines. The project is adopted from PDL (http://portal.acm.org/citation.cfm?id=1218571).
JRemoteRun allow execute snippets of java code in running JVM.
This is a dynamic slicing tool for Java programs. The tool modifies the Kaffe virtual machine to collect the execution trace, and compress the trace on-the-fly. Please proceed to the tool's website http://jslice.sourceforge.net/ for download.
JSnapshot is an advanced java exception logging, monitoring and analysis tool. It traces thrown exceptions in real-time and logs a snapshot of call stack, variables and objects for every thrown exception. Fully integrated with Eclipse IDE.
JSpoor is a utility software for logging and recording of user interface events and actions during working sessions of users with a Java/Swing Software. It captures and records both high level (semantic) actions and low level actions such as mouse moves.
JSysmon is a Java library providing access to system information like CPU or Memory usage on various platforms using native calls. It can be used to build cross-platform monitors in your applications.
JTimeIt is a small framework for writing and running performance tests of Java sourcecode. It's 100% Java, which provides the opportunity of platform-independent performance tests. Additionally, it supports the measurement of JUnit Tests.
JTombstone is a program for finding dead code in your Java programs. It reports on dead code at the method level, by processing Java class files. No source code is needed to use it. JTombstone is a Java program and requires JDK 1.4 or later.
The open source profiler for the jvm.
Get an inside view of your application. Find bottlenecks by looking at the development of the duration of your main business methods over time even in production. Find the cause of those bottlenecks by applying the profiling capabilities of JVMLense.
JAva Fault Injection and MONitoring tool
Jarrut is a tool that makes developing and debugging Java ME applications (application using CLDC to be more specific) a bit less of a pain. Jarrut enables proper stack traces for exceptions, also when running a MIDlet on a real device
Java exception extractor. This utility will parse all files (either plain text or bzipped) and tries to search for various exceptions. It then tries to match exceptions against grouping rules (regexps). It is also able to group unrecognised exceptions.
Java agent which recognizes "flows" as unique sequences of instrumented method calls. Runtime statistics are collected for the dynamically detected flows during snapshot interval. The instrumented methods may be set either manually via UI or automatically in drill down mode. The automatic drill down mode effectively instruments classes generated by frameworks like Hibernate, Rhino, etc.
JIP is a high performance, low overhead profiler that is written entirely in Java. JIP gives the developer the ability to turn the profiler on and off while the VM is running. You can also filter out classes and packages as well as control the output.
This profiler (JRE 1.5.0 only) uses JVMTI and native bytecode instrumentation for the analysis of the heap, reachable objects, execution time, garbage collection efficiency, code coverage and thread contention. No preparation steps required in build.
Stopwatch is a simple, highly extensible, API that alows monitoring of any part of the application. It reports hits, execution times and load but can be extended to do more via custom engines. It is able to persist data in "in-memory" or real database.
jnetperf is a java version network performance benchmark(bandwidth,latency,.....), similar to netperf.
Java class profiler
Minimalistic java profiler using instrumentation and asm libs to preform a measure of the time spent by methods. Mesure is efficient until the micro second and very realistic on milli second. The ui allows exports, remote connection and multiple connections.
A collection of light-weight utilities for diagnosing, monitoring, testing, and fixing production Java web apps.
Jdptool is a debug and profiler tool which based on JPDA; It provide both swing based and browser based GUI. It has sophisticated debugger without user interfere. It also provide profiler to memory usage and threads with numerous new feature
Jensor is a light-weight, low-overhead Java Profiler built using Java BCI. Jensor provides innovative analysis modules like JVM Replay, Pattern Analysis and Tagging Engine for technical as well as business analysis based on the same underlying data.
Jetrace is a Java Enterprise trace tool that J2EE developers and architects can use to discover erroneous execution flows in JSPs, Servlets, EJBs, JNDI calls, JDBC calls and sockets. It can be used to validate both code and design and to troubleshoot.
Jwebap is an profiler tool for j2ee application with jdk 1.4 and up.You can use it to monitor method,jdbc,jsp executions etc.And then view in a web console.It can be used not only in test environment but production environment with very low-overhead.