For those of you looking for an alternative, Mastadon is good, but the creator of Bot Sentinel - one of the best machine learning platforms out there for finding and categorizing hate and misinformation content on Twitter - is creating a new platform called Spoutible.
I use Bot Sentinel to flag Twitter accounts that are disruptive and downright hateful. It is very good at letting you visually filter through crappy bots, trolls, and compromised accounts that are looking to give dialogue a bad time.
There might be a few imitators and alternatives coming down the pipeline, but Chris Bouzy is a fantastic tech entrepreneur with a good head on his shoulders and actually has morals. I would suggest at least trying the beta version coming soon and giving it a whirl for yourself when its ready.
https://twitter.com/user/status/1603663275471798273