Last but not least, there must be room for another emulator. If not on your SSD, then at least here in this email, because the following is too good to just disappear into oblivion.
izapple2 is an emulator written in Go - and therefore portable - for the Apple ][+ and Apple //e.
The special thing about it is, that there are no other system-specific dependencies except for SDL, and thus the project can be made to run on Windows, Linux and also on the Mac.
Iván Izaguirre mentioned only the support for Windows and Linux in his documentation, but after a quick `brew upgrade go` the emu could be built and run directly on the Mac without any problems.
Following the docs you can play Karateka immediately. After a 32MB download you get plenty of games in the form of the Total Replay collection. ❤️
Fast, elegant, and opensource. What can you say, except: Be sure, Caps Lock is down. 👹