Scanner available for non-FOSS detection?

I was wondering if anyone has come across a utility for detecting non-FOSS software on an installation. After having my Librem13 for almost a few years now and while I’ve tried to be diligent about what I install, I’d like to be able to keep myself honest :slight_smile:

Thanks!

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I just found this: https://askubuntu.com/questions/1093752/how-to-make-sure-im-not-using-any-proprietary-software-after-installation

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Thanks! Hadn’t seen vrms in my searches before, but that did the trick. Thank you again!

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For a magician, another answer is: build everything from source yourself.