Though Linux is an open-source operating system and usually comes bundled with free and open source software, proprietary software for Linux does exist and is available to end-users.
An extensive list on Wikipedia
PS: Please help us to add some other software to the list on wiki!! rotfl!
Chrome is open source. And in the same paragraph, you have Firefox. What is your definition of proprietary anyway? That it’s developed by a corporation, or it’s closed source? Sounds like you use the first meaning when most other people use the second.
You sure are right!!
Developed by a corporation is the mean of this list, open or closed-source!
But they are both open source, so they fail the second definition.
Like I said you are right, it is just a list of software!!