The governance systems between Steem and EOS are similar. They have a set of block producers that are elected by the community to serve the network in producing blocks (and whatever else they may add value with to advance it's goals). It's also in the same "family" of blockchains, so the software is pretty similar. That's why it was fairly easy to just replicate code that looks very similar to other apps I've built.

That's where the similarities end for the most part though.

Steem is a content platform with a social rewards currency attached to it. It will (hopefully) soon have SMTs which will basically be a turn-key solution that allows people to easily deploy their own tokens and power their own social network with those rewards.

EOS on the other hand is a general purpose computing platform. It acts as a giant computer of sorts (like ETH or NEO), allowing anyone with staked tokens to build and/or run decentralized applications. All of the concept type applications you see happening within the ETH token world are similar to what EOS will be able to do.

Probably more than you asked for - but others may have the same sort of question.