What are some things that have been written in rust, besides Servo? I think one of the reasons Go has been so successful is that they started right off the bat

What are some things that have been written in rust, besides Servo? I think one of the reasons Go has been so successful is that they started right off the bat with something people could use, and focused on creating tools and other things which encouraged people to dive in. Julia had this too with their math libraries. Things like web servers / frameworks, game engines, parser libraries, command line tools... What is written in rust that I could use to start building actual stuff?