Refined Twitter - A browser extension that improves the Twitter experience
Typefully - Write & publish great tweets, without distractions
Simplified Twitter - The new Twitter, without distractions
Tweet Tray - Tweet quickly from your desktop without any distractions.
Tweak New Twitter - Reduce "engagement" and tone down some of New Twitter's UI
Vanilla Timeline for Twitter - Browse Twitter without the some-user-liked tweet clutter.