Refined Twitter - A browser extension that improves the Twitter experience
LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.
Typefully - Write & publish great tweets, without distractions
SuperDMs - SuperDMs helps you grow your following by sending bulk DMs to your tweet responders.
Thread Creator - The best way to create and schedule Twitter threads
WhatsMany - Send personalised WhatsApp messages in bulk