dotMemory - dotMemory allows users to analyze memory usage in a variety of .NET and .NET Core applications.
Robot Console - Robot Console is a Message and Event Monitoring Software for IBM i thathas automatic message management, resource monitoring, and log monitoring.
Munin - PnP networked resource monitoring tool that can help to answer the what just happened to kill our performance
VisualVM - VisualVM is a visual tool integrating several commandline JDK tools and lightweight profiling...
JProfiler - JProfiler is the leading Java Profiler for profiling on the JVM. JProfiler's intuitive UI helps you resolve performance bottlenecks, pin down memory leaks and understand threading issues.
Derailed Benchmarks - Derailed Benchmarks is a benchmarking tool for Rails.