1Password - 1Password can create strong, unique passwords for you, remember them, and restore them, all directly in your web browser.
Element.io - Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
Drive Password - Password manager encrypting and storing in your Google Drive
ChatSecure - ChatSecure is a free and open source messaging app that features OTR encryption over XMPP.
8Password for iOS - Secure password manager
Keybase Chat - End-to-end encrypted chat built into Keybase