Unofficial SuperCollider build from the develop branch. Requires Jack to be installed.
Uses JACK as a backend directly - it will be visible to JACK without using JackRouter. Compiled for macOS 10.10+. Seems to work on Catalina, after manually allowing SC to run.
Note: this build should be able to run with either JACK from JackOSX, JACK2 installed with the new installer (October 2020), or with jack1 from homebrew (jack from homebrew untested).