You can do the opposite: take the Reddit apps that aren't working anymore, do a one line change [1] (to use https://api.rings.social ) and you're now able to use a Reddit client to browse Rings [2][3] - a Reddit API compatible content-voting platform licensed as AGPLv3. [1]: https://github.com/rings-social/Infinity-For-Rings/commit/cd... [2]: https://rings.social [3]: https://github.com/rings-social
A cool variation of this would be a Reddit API to ActivityPub bridge which would make it compatible with Lemmy, Kbin etc. I saw a project for this a while ago but can't remember what it's called.
Activity seems to have died down now that some larger Reddit apps have announced they're building dedicated Lemmy clients. Connect for Lemmy is pretty good already, Sync is coming out with an app in a few weeks, and there are other apps out there as well.