Geddit still works and it's a great app (it can read posts labelled nsfw without an account). The other working one I know of is RedReader, which Reddit have left unbroken due to its advanced accessibility features for disabled readers (but it cannot access nsfw things -- you get a message saying to use the website). My shared IP has been network blocked by Reddit and anonymous browsing is disabled. I also see about…
A weird aspect of the reddit API crackdown is that they never actually shut down unauthenticated access to the API. rif is fun also still works (or worked last time I started it a month or two ago), it's just read-only. The JSON endpoints Geddit uses are the reddit API, and it's wide open, so in no way is it "bypassing API restrictions".
Also, they are part of the API much of which is actually restricted behind authorization.