I couldn't find a solution to automate a Knime workflow with MacOS. What kind of options does it have out there?
I've tried using Mac Automator, but it didn't worked out.
I cannot give any specific recommendations or first-hands experience about Apple Automator. You should be able to schedule a KNIME workflow using Automator and the KNIME CLI batch mode -- you can try this in a regular Terminal window first, and then transfer it to an Automator workflow with a “Execute Shell Script” action.
General documentation about the KNIME batch mode is available here.
Beside that, there’s a couple of further options:
KNIME’s commercial “Hub” or “Server” product
Canopys Task Scheduler
NodePit Runner which is available as SaaS and on-prem hosted solution and currently available in a closed beta
Here’s a thread in the KNIME forum which is worth a read.