Yes: Rootstock ( https://www.rsk.co/ ). This exists as a sidechain to the bitcoin network and implements the Ethereum virtual machine. It launched on mainnet yesterday.
Keep in mind that rootstock currently is a federated sidechain, so it is decentralized only insofar as you consider federated cryptocurrency systems to be "decentralized" (and different folks disagree about this)
Most of them are shallow changes or "busy work" to show activity. I have been watching FileCoin and Tezos Github, and I wouldn't expect much from either one of them.