http://status.nowherejezfoltodf4jiyl6r56jnzintap5vyjlia7fkirfsnfizflqd.onion/opsec/closedsource/index.html
It should ONLY do what it was originally meant to do. By that standard, you can already discard software like Windows, Discord, Whatsapp, Instagram, iOS, pre-installed phone host OSes, Word, Excel, etc, as none of them are open source, and you can be damn sure that they are spying on everything you do, wilfully or not.