Cosmos is a cross-chain protocol that is working to establish a standardized way for blockchains to inter-operate. It has been called the internet of blocchains. Cosmos is building a standardized protocol for multiple blockchains to operate freely together, and allow transfers of value between them. Cosmos is made up of a network of blocckhains called zones. Each of these zones will be powered by a the Tendermint consensus protocol. Cosmos will act as a hub, that ties the zones together and manages their coordination. The Cosomos token called ATOM was released in an ICO that raised $53 million, but it will not be traded until the platform is launched.

Mercury Token is a Waves-based token that was created to facilitate cross-chain communication, and timestamping, between the Waves blockchain and the Jupiter blockchain.

Liquality is developing a cross-chain technology that will allow users to covert Ethereum to Bitcoin, and vice versa with minimal risk and fees, while maintaining control over their private keys. Their interface offers a secure way to exchange cryptocurrencies by using atomic swaps. Liquality is a ConsenSys portfolio company.