Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
Notopass - Share your accounts without giving username/password
MyChat - Secure instant messenger for any network
1Password - 1Password can create strong, unique passwords for you, remember them, and restore them, all directly in your web browser.
Ubiq Security - Enable developers to build encryption into apps in minutes
SuperTokens - Open Source User Authentication - An Alternative to Auth0 / Firebase Auth / AWS Cognito