Add.xyz is full-stack DeFi aggregator that places a strong emphasis on privacy and security. Add.xyz provides users with a suite of DeFi services in one unified platform that is powered by the ADD token; including: lending, staking, coin blending and swapping. The platform has several off-chain and on-chain privacy mechanisms that are designed to increase anonymity and privacy for DeFi services. The Add.xyz protocol unifies several of the leading DeFi protocols and blockchain infrastructures. It enables communication between the different protocols to create and execute various financial transactions.

ArcBlock is creating a blockchain ecosystem for building decentralized applications. Their goal is to provide consumers with the framework and tools to use decentralized apps as easily as current web-based versions. ArcBlock was founded by Robert Mao and Flavien Charlton, who also created Colored Coins, Open Assets Protocol and Openchain.
ArcBlock's Open Chain Access Protocol gives developers an abstract layer for using underlying blockchains. It has a serverless computing architecture that supports various types of applications. ArcBlock is based on the Blocknet application protocol that executes smart contracts and can access external data sources. Blocknet's design and open chain access protocol provide a layer for accessing multiple blockchains.

Kusama coin is the native coin of the Kusama blockchain, which is intended to serve as an unaudited and unrefined release of Polkadot. Kusama will serve as a trail version for Polkdadot, and will allow developers to build and deploy a parachain or try out Polkadot’s governance, staking, nomination and validation functionality in a real environment.