Blockchain Demo - Visual demonstration of blockchain technology
1Password - 1Password can create strong, unique passwords for you, remember them, and restore them, all directly in your web browser.
Explain Me Please - Complex topics explained for your level and background
Buttercup - Free and open source password manager for Windows/Mac/Linux
Coinwink - Crypto alerts, watchlist and portfolio tracking app for Bitcoin, Ethereum, and other 3500+ crypto coins and tokens
Drive Password - Password manager encrypting and storing in your Google Drive