Rainmaker - Rainmaker allows you to make your Google Contacts better.
Coinbase - Bitcoin, safe and easy.
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
Binance - Cryptocurrencies exchange platform
dip - accountability groups for developers
Poloniex - US-based cryptocurrency exchange with maximum security