This appeared like last week :
I personally think it’s a wonderful initiative and we should all support it.
It looks and feels great, harmonizes Hackage and Hoogle (e.g. try this link Hackage: The Haskell community’s package registry) and is built with modern web technology (next.js). I really wish to see it succeed and that it may one day replace the current Hackage frontend.
The author is also collecting design ideas (taken in part from the Hackage server backlog) in a github issue : Notes and ideas · Issue #1 · visortelle/hackage-ui · GitHub
Incidentally, @Kleidukos too is building an alternative frontend to Hackage, but with a radical redesign in mind rather than feature parity : Flora :: [Package] . They too deserve all our support, but the timeline and integration path with Hackage will be different.