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EOS.IO is a smart contract blockchain software made for building, hosting, and running decentralized applications. It offers a public infrastructure ecosystem for creation of decentralized applications. It is scalable, flexible, and highly usable through the use of web tool kits. The native cryptocurrency token for EOS is the EOS coin. EOS launched its mainnet in June 2018 after the initial coin offering for Block.one from June 2017 to June 2018. They sold $4.19 billion worth of EOS tokens, making it the largest ICO in that time.