I'm not sure if other sites like this exist but I will definitely be bookmarking this and adding it to my favourites tab. I always use block explorers to check addresses and never even thought to see if there was a universal site that worked with all cryptos.
The only constructive criticism I have is that maybe you should consider fixing the UI on mobile platforms. Something about the formatting is a little off. Other than that it looks great.
Thank you for this! Much appreciated