Is there an alternative to Barrier that works on Wayland?
While Barrier is looking to support Wayland in the future, as far as I can tell, there are no alternatives at this point that do support Wayland.
From a Reddit thread someone points to a fork of it and says that it will have Wayland “soon” (Wayland support? [Donation target met] · Issue #109 · input-leap/input-leap · GitHub), but it appears to still be in heavy development, so may be quite unstable.
I went browsing and I just discovered Waynergy. I’m gonna try at work and see how well it does (when I get the chance).