Shopify apps for getting outside pricing feeds.
Custom functionality based Shopify apps.
Shopify apps for order & customer management.
Shopify ERP integration apps for Netsuite and Microsoft Dynamics.
Shopify apps for marketing and re-targeting.
Shopify apps for third party website integration.
Shopify apps for integration with custom inventory systems.
Apps for custom item features & custom Shopify themes.
API or third party integration based Shopify apps.