These are performance analysis and tuning tools you can buy. Most have free demos of some kind (limited time and/or limited functionality.) In general the commercial tools are all high quality and reasonably easy to use:
| Tool Name | Tool Description | Website |
| OptimizeIt | A full featured JVMPI compliant Profiler. (Works with any JVMPI compliant VM.) | www.optimizeit.com |
| JProbe | A full featured JVMPI compliant Profiler. (Works with any JVMPI compliant VM .) | www.klgroup.com/jprobe |
| TrueTime | A full featured JVMPI compliant Profiler. (Works with any JVMPI compliant VM .) Also can profile native code. | www.numega.com/products/perf/tt_java.shtml |
| Quantify | A full featured JVMPI compliant Profiler. (Works with any JVMPI compliant VM .) Also profiles C and C++ code. | www.rational.com/products/vis_quantify/index.jtmpl |
| Introscope | A low-overhead, low-resolution performance monitor intended for production envrionments. It monitors application performance, writes detailed logs to a database and can raise warnings (on-screen and by email or pager) when the system gets over-loaded. | www.wilytech.com/products.html |
These are free performance analysis and tuning tools. Their quality, ease of use, and level of support varies.
| Tool Name | Tool Description | Website |
| Jinsight | A free Java 2 profiler that uses the JVMPI interface. | www.alphaworks.ibm.com/tech/jinsight |
| Apache JMeter | Webserver scalability tester/exerciser | java.apache.org/jmeter |