policy control
It’s not exactly the same, but you could use puppet to enforce configuration
Software Center with software allow lists
You can setup a custom repository with only approved software and then set that as the only one that the system is configured to retrieve packages from. This can also be controlled via puppet.
controlled OS updates
Same as the previous point. Upgrades are installed from the repos.
zscaler
I don’t know what that is/does, and their website isn’t helping.
software detection tool to detect what’s been installed and determine if any unallowed software is present
I’m pretty sure carbon black app control has a linux version.
antivirus
There are a number of different antivirus solutions for linux. A quick search will give you a bunch of lists. I’m not personally familiar with any of the options, but I don’t imagine it will be difficult to find one that will work for your use case.
When troubleshooting, it’s nice to be able to ask copilot about the issue in human language and have it actually understand my question (unlike a search engine) and pull from and reference relevant documentation in its answers. Going back and forth with it has saved me several hours of searching for something that I had never even heard of a couple of times.
It’s also great for rewriting things in a specific tone. I can give it a bland/terse/matter-of-fact paragraph and get back a more fun or professional or friendly version that would feel ridiculously cringe if I attempted to write it myself, but the AI makes it work somehow.