I don't connect my real-life identity to my personal identity.

I am the primary author (but not current maintainer) of an open-source project which is reported to be used by over 100 million people, according to (flaky) statistics kept by the current maintainers. That's around 1% of the people in the world.

I don't trust the current maintainers to be honest with numbers (there are lots of ways to estimate numbers of users), but it's definitely in the millions, and it's a project you (and most random people you'll meet in tech, and many outside of tech) will have heard of.

I am currently working on earlier-stage projects, which have smaller communities, but 100% of them are open-source.