Top 10 Best Assortment Optimization Software of 2026

Blue Yonder OPTIMIZATION Suite stands out for tying assortment decisions to network-wide operations, not just store-level forecasting. The suite supports merchandise and inventory planning with optimization methods that incorporate constraints such as capacity, service levels, and replenishment policies. It is designed to connect planning outputs to execution signals, so assortment recommendations can align with supply availability and fulfillment realities. Strong fit appears for retailers that run frequent, constraint-aware planning cycles across many channels and banners.

RapidResponse by Kinaxis stands out for tying assortment optimization to rapid, scenario-driven supply and demand planning. It supports recommendation workflows that evaluate product, inventory, and service outcomes together. The solution is designed for end-to-end decision cycles that connect merchandising choices to operational constraints and timing. Strong governance features help teams manage approval, assumptions, and auditability across planning runs.

SAP IBP for Supply Chain and Assortment Planning stands out with tight integration between demand planning, inventory planning, and assortment decisions across brands, stores, and channels. Core capabilities include scenario planning, what-if analysis, and optimization workflows that connect forecasting signals to assortment depth and allocation outcomes. The solution supports ATP-style constraints and supply availability logic so assortment recommendations respect operational realities like capacity and replenishment lead times. Planning surfaces are delivered as guided processes backed by SAP data models, which helps standardize planning across regions and business units.

Oracle SCM Cloud assortment planning stands out by tying assortment decisions to demand, supply, and merchandising workflows inside the Oracle supply chain suite. The solution supports category and product assortment definition, planning by channel and location, and scenario-based what-if analysis for optimal item and size selections. It also emphasizes collaborative planning and structured approvals, so merchandising teams can align changes with forecasting and inventory constraints.

o9 Solutions is a decision-focused assortment planning and allocation suite that ties forecasting, constraints, and business rules into a single optimization loop. It supports allocation across channels and geographies using hierarchy-aware product structures and demand signals. The platform emphasizes what-to-make and where-to-ship decisions, including assortment rationalization and capacity or service-level constraints. It is best suited for teams that manage complex catalogs, multilayer hierarchies, and frequent plan refresh cycles.

PROS Revenue Optimization and retail planning stands out for combining revenue management modeling with assortment planning workflows aimed at retail and consumer goods teams. The solution supports SKU and hierarchy-level demand, pricing, and margin drivers to recommend assortment changes that connect to financial outcomes. It also emphasizes scenario planning and performance tracking so teams can validate planned assortment moves against expected impact. Integration with enterprise data pipelines is central to keeping recommendations grounded in store, channel, and item signals.

RELEX Solutions distinguishes itself with end-to-end assortment and inventory planning that uses retail-specific optimization instead of generic forecasting. Core capabilities include assortment planning, inventory optimization, demand forecasting inputs, and scenario-based decision support across stores, channels, and time. Planning outputs connect to execution needs by producing actionable recommendations tied to inventory and product availability constraints. The solution is strongest for organizations that can translate merchandising goals and supply constraints into structured planning inputs.

ToolsGroup stands out for retail assortment optimization tied to merchandising and planning decisions across categories and channels. It supports demand and inventory modeling and advanced scenario planning to evaluate assortment changes against business outcomes. The platform emphasizes constraint-aware optimization for assortment, allocation, and plan-to-achieve workflows rather than simple recommendation lists.

Blue Yonder Demand Forecasting and Inventory Optimization stands out for combining demand forecasting with inventory and service-level optimization in one suite. The system supports multi-echelon planning and uses statistical forecasting to drive stocking, replenishment, and capacity decisions. For assortment optimization, it can propagate forecast and inventory constraints down to product and location decisions to reduce stockouts and markdown pressure.

DELMIA Ortems stands out for combining supply chain planning and logistics optimization with discrete-event and simulation modeling of real operational systems. It supports scenario-based planning to evaluate fulfillment, inventory, and routing decisions against performance and constraint targets. The platform is built to feed optimization outcomes into operational decision workflows rather than producing one-off schedules. It is strongest when order fulfillment and network flows require visibility into process timing, capacity limits, and interactions across planning layers.