All proprietary programs or services that may or may not track you. There should only be free software on that website. You can't tell whether a proprietary service tracks you because you can't see the source code.
Did anyone else read that link as "Nom or google"? I think I'll nom, please. Maybe on some cake. Nom nom nom.
Fosstodon is a Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.