snset is a python cli tool for retrieving the list of installed update sets in two ServiceNow instances, comparing them, and outputting the list of update sets that are installed in the source instance and not installed in the target instance, in the order that they must be installed in.
Checkout out the repository: git clone https://github.com/ab7289/python-sn-set
Navigate into the project directory: cd python-sn-set
Install with pip: pip install . -e
snset --target {target instance} --source {sourceinstance} snset -t {target instance} -s {source instance}