I love Shortcat but it's too slow to be usable on my i5-based MacBook Pro. I have been using Wooshy instead, but I'll be checking out mouseless after seeing it mentioned here.
Strange, I use it on the same setup and have no issues. I imagine you already know that the delay of the overlays can be reduced and eliminated in the settings. I recently nuked and paved that machine, though, and everything feels like it's running faster than before.
I'm not familiar with Wooshy, so I'll have to check that out. Shortcat doesn't receive updates and for years there has been an indication that it would move from beta to licensed software (which I would happily pay for!), so I live in constant fear that it's on the road to abandonware.
Good to know Shortcat is capable of working well on my laptop! I'll have to mess around with it. I think I have tinkered with the delay, so thanks for the tip on that. Wooshy is alright, but I think I prefer the hint-based approach to selecting a target.