Squarify.io - Sync inventory between Square and Shopify.
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.
Bonsai Payments - Simple invoicing & payments for small businesses and freelancers. Collect instant payments or set up recurring payments. Get paid via credit card or bank deposit in 100+ currencies.
Razorpay International Payments - Easiest way to accept payments in 100 currencies 🇮🇳
Shopify Tap & Chip Reader - Mobile POS hardware that connects to the rest of Shopify
MangoPay - End-to-end technology for marketplaces and crowdfunding