BURN.link - Send secure, encrypted, self-destructing messages
sup3rS3cretMes5age - A safe, simple tool for one-time (self-destructing) messages
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.
1ty.me - If you need to send a password or some other form of simple but sensitive information to someone...
DataMask.tech - Mask private data before taking screenshots
Boop - A scriptable scratchpad for developers. Free & open source!