With twitter having somewhat of an uncertain future and users looking for other platforms.
Meta/Facebook and some previous twitter employees have begun to develop, tease and some are launching competing sites.
The most promising thus far appears to be from meta/facebook, which is set to launch on 7/6/2023.

Threads billed as an instagram app, this is what we know so far.
Say more with Threads — Instagram’s text-based conversation app
Threads is where communities come together to discuss everything from the topics you care about today to what’ll be trending tomorrow. Whatever it is you’re interested in, you can follow and connect directly with your favorite creators and others who love the same things — or build a loyal following of your own to share your ideas, opinions and creativity with the world.
pre-order here: https://apps.apple.com/us/app/threads-an-instagram-app/id6446901002

There is also Spill:
https://www.spill.com