DetectDuplicates 
A .NET Global tool that scans csproj files for duplicate package references
Installation
Execute this from your terminal dotnet tool install --global DetectDuplicates
Running the tool
To run the tool you can simply call detectduplicates from your terminal. This will use the current directory to look for *.csproj files.
To specify a path to analyse *.csproj or *.fsproj files you can call detectduplicates /path/to/csproj