Block Together - A useful tool which helps you block trolls on Twitter.
Tweet Tray - Tweet quickly from your desktop without any distractions.
Secateur - Use Secateur if you want to temporarily or permanently block or mute (or both block and mute) a Twitter account and all its followers.
Typefully - Write & publish great tweets, without distractions
CleanSpeak - Keep inappropriate content and trolls out of your community
Minimal Twitter - A distraction-free browsing experience for the new Twitter