Coinbase - Bitcoin, safe and easy.
Pingo - Optimize images for the web quickly 🖼️⚡
Binance - Cryptocurrencies exchange platform
Imakiku - Imakiku is an audience response system for real-time voting, posting comments, and surveying.
Poloniex - US-based cryptocurrency exchange with maximum security
Blooket - Blooket is an interesting application that provides you with a wide range of features to create activities for class engagement.