ChargeOver - ChargeOver automates recurring billing, subscription billing, & payment acceptance. A SaaS that integrates with Xero, Quickbooks, & has an API. Free trial.
Shopify Tap & Chip Reader - Mobile POS hardware that connects to the rest of Shopify
MinuteDock - Web-based time tracking software designed to integrate with the Xero accounting package.
Stripe Terminal - The programmable point-of-sale solution 💳🛠️
fusebill - Fusebill is the leading recurring billing and subscription management software for businesses. Try Fusebill for subscription billing made easy!
AutoSync for Shopify - Sync your inventory levels between Shopify and Square