Deleaker - Deleaker finds memory leaks, GDI leaks, leaks of handles, USER objects and others. Available both as a Visual C++ extension and standalone application.
Telerik - UI Frameworks and App Development Tools
dotTrace - dotTrace helps you detect performance bottlenecks in a variety of .NET and .NET Core applications
Oink - Oink is a Rails plugin and log parser to help narrow down the source(s) of increased memory usage in rails applications.
CodeTrack - CodeTrack is a performance profiler for .NET applications
Benchmark-ips - Benchmark-ips offers an iterations per second enhancement to Benchmark.