Anycomplete - The magic of Google Autocomplete while you're typing
LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.
Qikipedia - Instant Wikipedia summary cards on any web page
TextBlast Bulk SMS - Send personalized mass messages easily
Newsit - Find the discussion around the page you're looking at!
Texted.io - Send text blasts to groups, receive individual replies