Sidebird - Notion to Twitter thread.
LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.
Twidd - Enhanced Twitter DMs - Create and use DM templates, all within a browser extension.
SuperDMs - SuperDMs helps you grow your following by sending bulk DMs to your tweet responders.
BypassDM - Hello private Twitter communication!
Promote Route - A Better WhatsApp™ Experience