LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.
Workomo - Find out everything about people before you meet
WhatsMany - Send personalised WhatsApp messages in bulk
Watsappnow - A useful and handy tool that can let you ping anyone new on Whatsapp without the need of saving their number.
Promote Route - A Better WhatsApp™ Experience
No Code MBA - Learn to build real apps and websites. All without code.