BURN.link - Send secure, encrypted, self-destructing messages
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.
Boop - A scriptable scratchpad for developers. Free & open source!
Kaboom by Hotspot Shield - Share messages & photos that disappear on any social network
Confidential CC - Send self-destructing email without leaving a trace
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.