The best order management software

Order management software (OMS) captures orders from every sales channel and manages them through routing, inventory allocation, fulfillment, and status updates on one system of record. Most OMS platforms run on rules you configure and maintain; modern operating systems like Endless add AI agents that act on that data and run fulfillment rather than just tracking it.

It depends on how you sell. Linnworks and Zentail suit marketplace-heavy sellers, Sellercloud suits high-SKU catalogs, Goflow offers published pricing, and Pipe17 focuses on AI-native routing and connectivity. Our pick is Endless Commerce for brands that want native EDI, transparent pricing, same-day go-live, and agents that run orders across every channel.

An OMS is focused on the order lifecycle — capture, routing, allocation, and fulfillment across channels — while an ERP spans the broader back office, often including purchasing and a general ledger. The lines blur with modern commerce operating systems: Endless unifies orders, inventory, purchasing, and EDI on one source of truth, covering OMS work without the months-long ERP implementation.

Endless ships native EDI (EndlessEDI) as part of the platform, so orders and documents flow on one source of truth. Many OMS tools handle retail EDI through third-party partners or integrations rather than natively, which is worth confirming during evaluation. Native EDI matters most for brands selling into big-box and wholesale retail.

Ecommerce order management is the process of capturing every online order — storefront, marketplace, and wholesale — and carrying it through inventory allocation, fulfillment routing, shipping, and returns on a single record. It differs from generic order entry in that inventory has to stay accurate across channels simultaneously, so an Amazon sale and a Shopify sale cannot promise the same unit. Endless runs this on one source of truth, with agents allocating and routing rather than staff reconciling exports between systems.

Sales order management covers the lifecycle of a confirmed customer order: validating it, allocating stock, pricing and terms, fulfillment, invoicing, and collection. In wholesale and B2B it also carries purchase-order matching, case-pack rules, and retailer routing requirements. Endless treats DTC and wholesale orders as the same object on one model, so a retailer EDI 850 and a storefront checkout draw from the same inventory and land in the same ledger.

Purchase order management is the inbound side of the same loop: raising POs to suppliers, approving them, tracking confirmations and shipment dates, and reconciling receipts against what was ordered and invoiced. Brands that run it in spreadsheets typically discover the gap at receiving, when quantities and landed costs no longer match. Endless keeps purchasing on the same record as sales and inventory, so demand signals raise the PO and receipts reconcile without rekeying.