Robinhood - Free stock trading service.
Paytiko - Advanced payment management software
Trigger Finance - IFTTT for the stock market
PayPal - PayPal is the faster, safer way to pay online without sharing financial details, send and receive money or accept credit and debit cards as a seller
SysGears Grain Framework - The simplest way to start investing.
Braintree - An all-in-one solution to accept, process, and split payments in your mobile app or online - from small business to large enterprise.