Snow - Classic Macintosh emulator

I suppose - owing to its accuracy - that this doesn't have some of BasiliskII's killer features: it patches the OS/ROMs to add support for super-high resolutions and (mostly) seamless integration with the host's file system and network.

It's a shame that Basilisk - possibly owing to its inaccurate but killer features - is as janky as it is, because it's really remarkably pleasant to use when it works.

An accurate emulator with clean codebase is a good starting point onto which to add patches/shortcuts. I've looked through the Basilisk patching code, it's not really complicated, and there are a handful of partial Toolbox reimplementations including the bits in Basilisk, Executor (author is in the comments here), MACE, etc. It would be some work to port but mostly direct translation of the code & adding test infrastructure.