Did you just click onto the link and tried it out? It is only a simple database / table on a webserver and a web frontend where you could enter a search text and it will do something as
SELECT * from dbo.feature_table WHERE feature_name LIKE '%' + @search_text + '%'
It is nothing you can download and does nothing local on your network (and if it COULD do that, you should check your security 🙂
God is real, unless declared integer.