Splunk collects, indexes and harnesses all the fast moving machine data generated by your applications, servers and devices - physical, virtual and in the cloud. Troubleshoot application problems and investigate security incidents in minutes instead of hours or days, avoid service degradation or outages, deliver compliance at lower cost and gain new business insights.

Watch our Splunk Webinar here
http://youtu.be/Prx70pm3lkY

Download Splunk here

Puppet Enterprise is IT automation software that gives system administrators the power to easily automate repetitive tasks, quickly deploy critical applications, and proactively manage infrastructure changes, on-premise or in the cloud. Puppet Enterprise gives system administrators the operational agility, efficiency and insight you demand to manage dynamic infrastructure, on-premise or in the cloud.

Download Puppet here

The Open Source monitoring solution that started a phenomenon and continues to provide dependable monitoring to hundreds of thousands of organizations worldwide. Nagios Open Source consists of various Nagios projects that provide the foundation for rock-solid IT infrastructure monitoring.

Download Nagios here

dynaTrace AJAX Edition 3 makes building lightning fast Web 2.0 applications easy. Speed your page load times, optimize rendering, tune DOM execution, and compare to competition. Even integrate with Selenium, Watir or QTP to begin automating your performance tests. It's free, it's easy and it's now for both IE and Firefox

Download dynaTrace Ajax here

With AppDynamics Lite, in a matter of minutes you can:

• Find which business transactions are showing slow response
• Drill down into slow requests, errors, and stalls
• Diagnose at the code level: Gain 100% visibility into each class and method performance and identify poor performing SQL

Download AppDynamics Lite here

jHiccup is an open source tool designed to measure the pauses and stalls (or “hiccups”) associated with an application’s underlying Java runtime platform. The new tool captures the aggregate effects of the Java Virtual Machine (JVM), operating system, hypervisor (if used) and hardware on application stalls and response time.

Download JHiccup here

Caching Software

• The most widely-used Java-based cache
• Robust, proven and full-featured
• Open source standards-based software
• Offload the database & boost performance
• Simplify scalability ... from in-process with one or more nodes through to a mixed in-process/out-of-process configuration with terabyte-sized caches.

Download Ehcache here