Stealthy: Secret Messenger - Chat anonymously with friends & strangers
Notopass - Share your accounts without giving username/password
Realifex - Personal diary for positive change
1Password - 1Password can create strong, unique passwords for you, remember them, and restore them, all directly in your web browser.
Roundio - Explore what people posted to Instagram or Flickr near you
SuperTokens - Open Source User Authentication - An Alternative to Auth0 / Firebase Auth / AWS Cognito