Which are the best competitors to Ethereum, and why do you think so?
(I know on top of my head that Cardano and IOTA try to challenge Ethereum,
although they still haven't proved much from my understanding?)
As I know, there are so many other platforms which have more advantages than Ethereum and can solve issues that Ethereum has not solved yet, but Ethereum has two things that is better than others is strong community and safety of system