SML/NJ has a standard library [0] beyond Basis with a lot of useful functionality, e.g. sets, queues, hash maps, red-black trees, sorting functions, regex.
Not much better on the browser though they seemed to have cleaned it up a bit since my last visit. Many years ago when I visited the website to download smlnj for class, I had to double and triple check the url and google/bing/etc the website to make sure it was not a spam site because of how barebones and amateurish the site looked.
> Which at first I kind of expected, until it said at the bottom it was updated in 2022.
I think the last update year is actually 2020. 2022 is the release year of the latest SMLNJ version. I think they could have layed it out better but smlnj is mostly for academic use so I'll let it slide.