Has something like prll (parallel) https://github.com/exzombie/prll <https://github.com/exzombie/prll> been added to zsh?

I need to do about 20 commands.  Each will take several hours to perhaps days.  I’d like to start some fixed number like 4 jobs that are running.  The others are waiting for one of the others to get finished.

I tried creating a Makefile and use the -j option in make but my targets have spaces in them and make doesn’t like that.  (This is on a BSD system.)

Thank you,
Perry