GMDH Streamline vs Optiply

GMDH Streamline is a desktop application for demand forecasting and inventory replenishment planning. It imports sales and inventory data from spreadsheets, ODBC-connected databases, and supported accounting or inventory systems, then generates statistical forecasts and can produce replenishment orders, demand plans, and revenue plans. Listed integrations include SAP, Oracle NetSuite, Microsoft Dynamics, QuickBooks, Odoo, Shopify, and Cin7; bidirectional connections can return recommended replenishment orders to connected systems. Planning tools include reorder point automation, safety stock planning, multi-location planning, and transfer recommendations. The free edition costs nothing and is limited to US$ 1M in annual revenue, 1,000 planning items, and 10,000 annual sales quantity. Customized pricing is also available, with no price listed. Streamline supports macOS from version 10.14, though its Mac package is not signed with an Apple-issued certificate. Streamline Server runs as a Windows service for multiple users sharing a project file. Hosted data transfers use TLS encryption, and passwords are hashed on the server and encrypted over the network.

Optiply automates inventory management and replenishment by recommending what to order, when to order, and how much. Its supply chain agent monitors demand, supplier performance, and stock levels, then places or adjusts orders and explains changes. The purchasing algorithm uses more than 40 forecasting calculations, considering sales, ABC categorization, seasonality, trends, peaks, and delivery times. Optiply advertises more than 50 integrations across ERP, WMS, fulfillment, retail POS, database, data provider, e-commerce, and marketplace categories. Named examples include Exact Online, Shopify, Picqer, WooCommerce, BigCommerce, and Bol.com. The Lite plan costs €79 per month and includes up to 1,000 sales orders per month and up to 1,000 SKUs. Lite offers a 14-day trial without a credit card for online stores using a standard integration. Several standard integrations do not require additional fees; custom system connections through the API may incur a one-time connection fee. Optiply serves e-commerce, wholesale, and retail businesses, and is available on web and through an API.