sync4 - 2026 Pricing, Features, Reviews & Alternatives

sync4 is middleware synchronization software that interfaces between enterprise resource planning and warehouse management systems and e-commerce platforms including online shops and marketplaces. The solution enables bidirectional synchronization of critical business data across back-office systems and sales channels to eliminate duplicate data entry and maintain a single source of truth. Users of ERP systems such as SAP Business One, Sage Office Line, Lexware, COS, PleasantSoft, Microtech, desk four Cloud and WISO Unternehmer Suite can connect to online shop platforms including Shopware, Shopify, WooCommerce, Gambio, Oxid eSales, ePages and modified eCommerce as well as marketplaces such as Amazon and eBay. The ERP system remains the authoritative source for product information, inventory levels, pricing and customer records.

sync4 automates synchronization of product data including descriptions, attributes, metadata, images and multimedia content by means of an integrated product information management module. Complex product structures are supported with variants and configurable options and customer specific pricing arrangements are mirrored from the ERP to connected channels. Inventory levels are updated in real time or according to defined schedules to prevent overselling and maintain accurate availability. Order information including customer details, payment data, shipping status and compliance documentation is imported into the ERP as formatted sales orders with sequential numbering. A scheduled service component ensures continuous synchronization without manual intervention. An Ultimate edition includes an AI Copilot module that automates content generation for product descriptions, metadata, search engine optimization attributes, category descriptions, translations and intelligent category assignment.

The solution integrates shipping management through a partnership with shipcloud to provide connections to carriers such as UPS, DHL, DPD, Hermes, GLS, FedEx, Die Post and Spring. Visual order processing interfaces guide fulfillment workflows and handle returns management. Native connectors support JSON interfaces and application programming interfaces for custom applications and proprietary system integration. E-commerce connectors include support for Shopware six point seven, Shopify with updated authentication required by January two zero two six, WooCommerce, Gambio, Oxid eSales, ePages, xtCommerce, modified eCommerce and shop solutions from IONOS, Strato, Telekom and Hosteurope. ERP connectors accommodate Lexware configuration for two zero two six, SAP Business One, SAP R three slash ERP, SAP S four, SAP All in One, Sage Office Line, desk four Cloud, Microtech, COS, Arista ERP complete, WISO Unternehmer Suite, PleasantSoft, Arthur Projekt Software, blue office and IN Software.

sync4 employs a microservices architecture to maintain compatibility with evolving platform APIs and ensure reliable data exchange. Regular updates keep service components current and maintain system integrity. The platform offers customization for specialized business logic and bespoke integrations beyond standard synchronization functions. Documentation and configuration tools enable adaptation to unique operational requirements and support continuity of business processes.