Steem open platform was featured in the top 10 on the Audit Report of 200 blockchain projects:

https://medium.com/@DPRating/dprating-github-audit-for-200-blockchain-projects-sep-2018-monero-and-bch-boosting-3db8b3d971d7

And Steem ecosystem includes many parties: developers, miners, content creators, curators (including organized leagues like Curie and more). And this is just the beginning.