Ok then, number 5: the desktop version of #TiddlyWiki, #TiddlyDesktop.
The Chromium wrapper isn't as old as the wiki web software itself but still goes back to 2014.
Standard Chrome traffic and... a lot of calls to googleapis.com. Why? Because it calls the Google spell check API with everything you enter.
All your text is being sent to Google.
I couldn't turn it off and on top of that a dummy API key is used so the API returns an error, meaning the functionality is completely useless.
@CrossEye@mstdn.plus This is definitely TiddlyDesktop only. It was added because people were missing the spell checking that their browser normally does ()