http://www.alphaworks.ibm.com/tech/ 可以根据分类下载相应所需要的工具等等，很不错的资源。

GC回收的分析，内存泄露的分析
http://www.alphaworks.ibm.com/tech/pmat
IBM Pattern Modeling and Analysis Tool for Java Garbage Collector
A tool that parses verbose GC trace, analyzes Java heap usage, and recommends key configurations based on pattern modeling of Java heap usage.

HeapAnalyzer
分析 HeapDump 文件，即内存对象的映像，它生成的文件大小与JVM占用的内存大小相当，现在小一些了
http://www.alphaworks.ibm.com/tech/heapanalyzer
A graphical tool for discovering possible Java heap leaks.

分析线程情况 JavaCore 或 ThreadDump文件，即线程的映像，用来分析线程资源锁等情况
javacore.时间.HHmmss.pid.txt
http://www.alphaworks.ibm.com/tech/jca
IBM Thread and Monitor Dump Analyzer for Java
A tool that allows identification of hangs, deadlocks, resource contention, and bottlenecks in Java threads.