Coinbase - Bitcoin, safe and easy.
OneSignal - Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
Binance - Cryptocurrencies exchange platform
Truepush - Unleash limitless possibilities with Truepush and save up to $600 monthly. Free up to 10K Subscribers on all features.
Poloniex - US-based cryptocurrency exchange with maximum security
PushCrew - Push Notifications for Websites