What do you mean? The tools listed in OP are all open-source, which is the opposite of proprietary. I googled for the definition of "proprietary" prior to replying, because I thought I might have had it wrong, but wikipedia defines it as "closed-source software".[0]
EDIT: I apologize, I was wrong, and a lot of the tools on the page are not open-source. I read the name of the website, clicked on a couple of projects, and they were open-source. So I assumed the rest was as well, given that + the name of the website.
What do you mean? The tools listed in OP are all open-source, which is the opposite of proprietary. I googled for the definition of "proprietary" prior to replying, because I thought I might have had it wrong, but wikipedia defines it as "closed-source software".[0]
0. https://en.wikipedia.org/wiki/Proprietary_software
EDIT: I apologize, I was wrong, and a lot of the tools on the page are not open-source. I read the name of the website, clicked on a couple of projects, and they were open-source. So I assumed the rest was as well, given that + the name of the website.