Sync for Lemmy app replacement which has multi windows for posts & communities

The sync developer has been MIA for a long time (1 year or longer) and I fear it will stop working sooner or later when Lemmy instances start updating to v1.0 in future.

I use Sync because it has a nice Material you theme, is smooth, supports caching posts & media offline (also keeps the comments, posts loaded even if android reclaims memory from the app)

I can open posts, comments, and even communities in a seperate window if I choose to do so.

Anything with multi window support out there yet? I used voyager for posting. But, want sync like multi window capabilities.