It's called Gab. It's non-partisan and they allow all legal speech. Big Tech is going absolutely nuts trying to shut them down. They are practically in a situation where they need to invent their own world banking system to do money transfers. I just sent them a check in the mail for 6 months of their premium service. "Paper checks in the mail" is currently the only payment system open to them. They've also gone through hell getting domain name service, etc. BitChute, which is trying to serve as a YouTube alternative, is running into similar problems with basic services being cut off.
At least on a small scale, we've got FR.
Try starting a <airquotes>conservative</airquotes> alternative to Twitter—on the scale of Twitter. Watch as all the factions of "conservatism" bring out their own lists of what they want censored. To avoid such a war, it's going to have to be either a small discussion group run by one guy (like FR) or a Gab-like open forum.
Trump should start posting 80% of his remarks on Gab instead of Twitter.