Roslyn Clr Heap Allocation Analyzer
Quick Video: https://www.youtube.com/watch?v=Tw-wgT-cXYU&hd=1
Roslyn based C# heap allocation diagnostic analyzer that can detect explicit and many implicit allocations like boxing, display classes a.k.a closures, implicit delegate creations, etc.
You can find also it on the Visual Studio Gallery, https://aka.ms/HeapAllocationAnalyzer
If you want it use it in your build: https://www.nuget.org/packages/ClrHeapAllocationAnalyzer/