I'm assuming you're talking about traditional package managers. Proprietary packages aren't uploaded to the main package repositories from what I've seen. The c

I'm assuming you're talking about traditional package managers. Proprietary packages aren't uploaded to the main package repositories from what I've seen. The company will typically provide the packages themselves (e.g., a deb or rpm file), and sometimes they'll provide their own repositories for easier delivery. This has been my experience with Dropbox, SpiderOak, and Sublime Text.