It's obviously not at the same scale as MangaDex, as they provide actual hosting for scanlation groups, but if you want to support the scanlator sites that do have a site - check out Kenmei, which is my take on tracking series you read. It specifically built with scanlator-first approach, so that you actually go and visit their sites, helping them survive long term, instead of hogging the traffic, like Tachiyomi does
https://www.kenmei.co/