X (formerly Twitter) can no longer be accessed in the Mac App Store, suggesting that it has been officially delisted. Searches for both “Twitter” and “X” Twitter can no longer be accessed in Apple's Mac App Store, suggesting it has been officially delisted.
I used this years ago when I was still on Twitter, it was a good app. It actually used windows properly instead of stuffing everything into a single window (for example making a new tweet opened a separate dialog) and everything. Rare to see nowadays