As you likely know we are running several alternative web front ends for Lemmy. Currently they are:
Of these Alexandrite and Mlmym have not been updated and maintained for more than one year now and the original authors have likely lost interest. I also assume that once we upgrade to Lemmy 1.0 they will stop working properly.
In addition I think only Photon and maybe Voyager have added support for the Piefed API, should we switch to that in the future (but it seems like Lemmy 1.0 might solve our main technical concerns with it, and the memory consumption recently got quite a bit better).
So all in all, we will probably sunset Mlmym and Alexandrite soon.
There is also a new frontend called Blorp that we could set up. It seems quite nice, but also very similar to Photon. But let me know if you are interested in using this frontend.
Edit: I was made aware of an somewhat maintained fork of Mlmym that we are now using, so that one can stay a bit longer then.
Edit2: We switched to an even better maintained mlmym fork that even plans to support the Lemmy 1.0 api v4, so I think that one should be good to keep for a while.