Toasty - Photo messages that can't be missed
Burner - Disposable phone numbers -- now with MMS photo support
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
Hushed App - Hushed App will allow you to receive a Secondary Phone Number for Private, Long-Distance...
TextNow - TextNow is a mobile virtual network operator (MVNO) that provides a free phone service to users by using other cellular networks coverage.
Numero eSIM - Numero eSIM is a phone-number app that makes voice and data possible anywhere in the world, for free.