It looks like $GRAIL is off to a good start. I wish that they had more information about the DEX on the website.
But it looks like a standard DEX and there is already some decent volume. They will probably add more information to the site over time.
Minus 2 stars for lack of information. But if you just want to execute some trades, it looks legit.
UPDATE: OK, I found the documents and the blog. They are hiding in the footer of the homepage. It's annoying when they do that. After reading through the docs, I still give it 3 starts. I think they are off to a good start, but a lot still needs to be proven. Show Less