Boolberry is a cryptocurrency based on CryptoNote technology. Boolberry's major benefit is to provide much stronger privacy to both the senders and receivers of transactions. The destination of a transaction can only be determined by its real recipient and transactions cannot be linked to a single sender. Each transaction could have many equally possible senders, and an attacker cannot determine which one it was. There is an aliasing facility built into the blockchain so that people or programs can send money to, for example, '@zoidberg' instead of a long address.
Kava is a DeFi platform that offers collaterized loans and stablecoins built with the Cosmos SDK. It aims to be cross-chain enabled bringing stablecoins to major crypto ecosystems such as BTC, BNB, ATOM and more. KAVA token will act as a governance and staking token to secure the network and vote on key upgrades. USDX token will be issued as a stablecoin backed by crypto asset collateral. Some calls it the MakerDAO on Cosmos. While USDX will be have similar to DAI, the USD stablecoin on Ethereum.