Aliexpress and Udemy come right at the top of my mind. But there are quite a few more. (several German web-sites like Trivago). Spring Boot is used more outside

Aliexpress and Udemy come right at the top of my mind. But there are quite a few more. (several German web-sites like Trivago). Spring Boot is used more outside the U.S. - Java is respected more in the rest of the world.