Thanks for the response. Unfortunately I already tried that and the package is not registered so it does not appear in the list.
Doing a manual search with the “find” command I found that there was an Easel directory under /Library which contained a Node.js app based on Iris. I couldn’t find anything else with Easel in it’s name.
I find it very sloppy when developers don’t clean up after themselves. There always has to be an uninstaller or at least some sort of log with the changed files.