With the latest JUCE update, we have added some simple analytics to the Projucer in order to see how people are using it and help us to make it better. If you do not want this data to be shared, it can be disabled by un-checking this checkbox:
which is accessed via the Projucer->Application Usage Data (macOS) or File->Application Usage Data (Windows, Linux) menu item:
Here is the commit where we added analytics so you can clearly see what data we collect.