Hacker News Reader

Nginx is one. It's now headquartered in SF, but it was founded in Russia and still has an office there.

JetBrains products are popular :)

I'm not sure if I follow but it seems like you're implying that Hyper.sh is a YC company or from Silicon Valley. Is that correct?

They are actually neither. They are not a YC company and they are based in New York & Beijing!