Thank you, Jay.
I haven't tried Freezer lately, but we tried it a couple of years ago in our Wallaby lab and couldn't get the backend to work properly, the UI code also had some issues. Our attempts to get in touch with the devs were unsuccessful, we've never heard back. We haven't touched Freezer since then, thus I'd like to correct my statement to "after trying it and attempting to get in touch with its devs, my team assumed that Freezer was abandoned". I'd be glad to find out that it's alive, but don't have high hopes.