Which projects have used Ropsten ETH?

Hi everyone,

I'm doing a bit of research about which which crypto projects have used Ropsten ETH, or more specifically, got their community to gather Rospten Eth from faucets and test their protocall or Dapp with it. I know one example is Keep network, but I'd like to know if there were any others. If you know of any, kindly share, this is part of research I'm doing for a company I work for.

Thanks