CLRProfiler is a free profiler tool from Microsoft for profiling .NET Framework applications. For questions on implementing .NET profilers using Microsoft CLR profiling API's, such as ICorProfilerInfo and ICorProfilerCallback, use the clr-profiling-api tag.
CLRProfiler is a free GUI profiler tool from Microsoft for profiling .NET Framework applications.
It allows for investigating performance bottlenecks in .NET applications, by providing various performance metrics, including the contents of the managed heap, garbage collection, and memory allocation call stacks.
CLRProfiler is no longer being maintained. The latest version could be downloaded from Microsoft: CLR Profiler for .NET Framework 4. The project used to be hosted on CodePlex, and is now archived. A mirror is also available on Microsoft's GitHub page.