Limbo.Umbraco.ModelsBuilder is a custom models builder for Umbraco 9+ we use internally at @limbo-works. It's purpose is to add additional features compared to what is available today in the build-in ModelsBuilder in Umbraco 9+ and the older community ModelsBuilder (which doesn't work for Umbraco 9+).
The package adds a new Limbo Models Builder dashboard in the Settings section.