Mastodon is a social network based on open web protocols and free, open-source software. It is decentralized like e-mail.
Gorgeous Mac client for Twitter, based on the mobile Twitter website. It has a beautiful and minimal interface, a convenient standalone Tweet composer, and it supports common macOS shortcuts. It also has a status bar icon for quick access.
You can go from light to dark as effortlessly as clicking an on-screen button, change tint hues to match any outfit, or cycle through your timelines with your keyboard. It's the same old Twitter, but with a fresh new coat of paint.