Great question. The three you've listed have their own great use cases as a visual spreadsheet layout for databases.

Some of our features that really help us stand out from this particular pack are the fact you can use EZQL in Outerbase to ask natural language questions on your database without knowing how to query (we'll even expose the SQL if you're interested in what was produced, great for learning SQL). Very helpful for larger databases. In addition to that you can take these queries and create data visualization right in our tool.