Name: .NET Core
Homepage: https://github.com/dotnet/core
Why should this be included in the repository?
So developers can create C# .NET cross platform software, using the latest technologies.
(Works well with Visual Studio Code, which is already present in the repositories)
This will make Solus an even greater alternative to Microsoft Windows.
Installing Mono is really not an option, and not a real alternative to this.
Prepackaged installations exists for several other distributions, but unfortunately none for Solus:
https://www.microsoft.com/net/core#linuxredhat