Bytecoin is a blockchain with a focus on transaction privacy. Bytecoin uses the Cryptonote protocol to protect the identity of the sender in any transaction. Bytecoin was publically announced in 2014 but has been mined since 2012.
From the EOS whitepaper: "The EOS.IO software introduces a new blockchain architecture designed to enable vertical and horizontal scaling of decentralized applications. This is achieved by creating an operating system-like construct upon which applications can be built."