Cryptgeon - Securely share self-destructing notes

MagicPad - Free, simple, and private, offline text encryption suite.

BURN.link - Send secure, encrypted, self-destructing messages

Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.

Burner Note - Burner Note is a free, ad-free and open sourced service for sending secure text based notes that are completely erased from existence once they've been read.

Blur - Blur is a software application available for both Google Chrome and your smartphone. It's developed by Abine, an online privacy company trusted by more than twenty million people. Read more about Blur.