Hi there,
So let me try to add some info. EOS is the next evolution of STEEM in terms of blockchain technology. But in this sense, it's faster, more robust and allows contracts to be executed similar to what Ethereum does (if you know that one) but with added functionality and performance, being able to execute actions assynchrounsly. It's currently on 7th place of the market cap value and has lots of applications already. You can have a peak at https://dappradar.com/rankings/protocol/eos for example.
Let me know any question you may have and I can answer them.