Executive Summary
Every inventory decision is a forecast with money attached. The software in this guide exists to make those forecasts at the level where the money is actually lost: the item, in the location, this week.
An enterprise supply chain suite plans the business in aggregate: demand by month, supply by plant, inventory by region. The losses happen below that level. A grocery chain loses margin when one store over-orders a short-life product; a distributor loses service when one warehouse runs out of a part another warehouse holds in excess. Inventory optimization and replenishment software makes the item-by-location decisions: what to order, how much, for which location, and when.
The products here differ by the level they plan at and the business they were built for. Some plan from production to shelf for large retailers and manufacturers. Some optimize stock across a multi-tier network. Some add forecasting and ordering to a mid-sized company's ERP. Some automate store-level ordering, assortment and planograms for retail chains. Some deliver probabilistic forecasting with the vendor's own experts. Some plan the shelf itself. The approaches are not exclusive; start with the level where you lose the most.
Why Item-Level Planning Is Bought Separately
Spreadsheets and ERP reorder points work until the number of items, locations and demand patterns outgrows them. At that point, each planner manages thousands of decisions with rules set years ago, and the safety stock that protects service in one place becomes dead stock in another. The software in this guide replaces fixed rules with forecasts that update as demand moves, and automates the routine orders so planners work on exceptions.
The platforms at the top of the market plan across the whole chain. RELEX describes a unified platform that retailers, manufacturers and wholesalers use to improve forecast accuracy and optimize inventory, pricing, merchandising and production, planning end-to-end from production to shelf. For a distributor with many warehouses, the question is different: ToolsGroup states that its Multi-Echelon Inventory Optimization evaluates the entire supply chain network simultaneously, using probabilistic models, instead of optimizing each node independently.
Forecasting method matters because averages hide the risk that drives stock decisions. Lokad states that its probabilistic forecasts help quantify the probability of future scenarios for purchasing, allocation, assortment, scheduling, pricing and asset management. A forecast that reports a range lets the system weigh the cost of a stockout against the cost of excess for each item, which a single number cannot do.
Add to the ERP, or Replace the Planning Layer
If ordering runs today on ERP reorder points, the first decision is whether to add a planning tool on top of the ERP, which keeps orders flowing through the system of record, or to adopt a planning platform that takes over forecasting and ordering and writes results back.
Adding to the ERP keeps orders flowing through the system of record. Netstock states that it is built to integrate with over 60 global ERP systems, converting ERP data into predictive insights. Retail chains may need more than ordering: LEAFIO states that LEAFIO AI typically connects to ERP and accounting systems for sales history, inventory balances, product master data, supplier parameters and financial information, and that its platform automates demand forecasting, replenishment, assortment planning and rotation, planogram generation and management, loyalty program management and TMS automation. The larger the scope, the more the planning tool becomes a system in its own right.
| Model | What you get | What you take on |
|---|---|---|
| ERP reorder points | Rules inside the system of record | Manual tuning that does not keep up with demand |
| Planning add-on to the ERP | Forecasts and order proposals on ERP data | Integration and a second interface for planners |
| Retail planning platform | Store-level forecasting, ordering and often assortment and space | Data feeds from stores and a change in planning roles |
| Network optimization platform | Stock positioned across all tiers | Modeling the network and its lead times accurately |
| Software plus vendor analysts | Forecasting and decisions with expert support | Dependence on the vendor's team |
How do you evaluate Inventory Optimization & Replenishment?
Evaluate these products on the orders they would have placed, not on their forecast charts. The capabilities that decide results are forecasting that handles promotions, seasonality and new items; replenishment that respects pack sizes, lead times, shelf capacity and shelf life; and automation that lets planners manage exceptions instead of every line.
Automation is the point of the purchase, so test how much of it you will trust. Lokad states that it fully automates routine calculations such as reorder quantities, multi-echelon allocations, lead time adjustments and repair schedules. For retailers, the shelf is part of the inventory decision: DotActiv states that Nova generates planograms from the ground up using zero-base logic, based on shopper decision trees, merchandising rules and store format needs.
| Capability | What it does | Buyer translation |
|---|---|---|
| Item-location forecasting | Forecasts demand for each item in each location | The foundation. Test on slow movers and new items, not just bestsellers. |
| Promotion and event forecasting | Models uplift and post-promotion dips | Decisive for grocery and convenience retail. |
| Automated replenishment | Generates orders within constraints | Ask what share of orders customers approve without changes. |
| Multi-echelon optimization | Sets stock across warehouses and stores together | Matters when the same item sits in several tiers. |
| Shelf-life and waste control | Accounts for expiry in order quantities | Essential for fresh and pharmacy categories. RELEX states that its platform allows wholesalers and distributors to anticipate and fulfill demand in every channel while minimizing spoilage and waste. |
| Assortment and space planning | Decides what is ranged and where it sits | Links the shelf to replenishment. DotActiv states that TrueView uses image recognition to verify planogram compliance at store level. |
| ERP integration | Reads master data and writes orders back | Ask for a reference on your ERP. |
| Explainable recommendations | Shows why an order quantity was proposed | Planners override what they cannot understand. |
Vendors in Inventory Optimization & Replenishment
Representative vendors include DotActiv, LEAFIO, Lokad, Netstock, RELEX and ToolsGroup. The list is alphabetical, is not a ranking, and is not for sale. How we choose vendors
The approaches below differ by the level they plan at and the business they were built for. Enterprise supply chain suites also include inventory planning and are covered in the supply chain guide; the vendors here specialize in item- and location-level decisions.
Scale and track record vary widely, and vendors state them in their own terms. RELEX states that its AI models have been refined across 600+ enterprise implementations. LEAFIO states that LEAFIO AI is best suited for retailers with complex inventory and fast-changing demand, including grocery and convenience retail, pharmacy, alcohol stores, pet shops, electronics, cosmetics and DIY retail. Ask every vendor for references in your segment and at your size; a strong fit for one is not a strong fit for the other.
| Vendor | Approach | Where it fits |
|---|---|---|
| Netstock | ERP planning add-ons | Inventory planning on top of a wide range of ERPs, with published entry pricing |
| Lokad | Forecasting with expert services | Probabilistic forecasting with the vendor's experts working alongside planners |
| ToolsGroup | Network inventory optimization | Multi-echelon optimization with probabilistic models |
| LEAFIO | Retail store automation | Store-level ordering, assortment and planograms for retail chains |
| DotActiv | Space and category planning | Planogram generation and shelf compliance, with a free entry tier |
| RELEX | Unified retail and supply chain planning | End-to-end planning for retailers, manufacturers and wholesalers |
One representative of each approach is named here; the field runs to more than twenty vendors, and several span camps. Approaches were set out before any vendor was selected, on the evidence of its own pages, and a place in this table is not for sale. Inventory and retail planning vendors, named here or not, can present their own case in the Spotlight below.
How much should you budget for Inventory Optimization & Replenishment?
Ask how pricing scales with the size of the planning problem: items, locations, modules and users. Two vendors named here publish entry points. Netstock states that its subscription cost depends on the product and bundle selected, with pricing starting at $900/month. Netstock states that its pricing is based on annual subscriptions. DotActiv lists free planogram generation supporting up to 40 SKUs and one segment.
Implementation can cost more than the license: cleaning master data, mapping supplier lead times and constraints, and changing how planners work. Ask for implementation fees, timelines and the customer staff time required, alongside the license.
| Meter | You are charged for | Grows with | Where it goes wrong |
|---|---|---|---|
| Items and locations | The size of the planning problem | Range expansion and new stores | Counting every item-location combination, including inactive ones |
| Modules | Forecasting, replenishment, assortment, space | Scope added over time | Buying modules before the first one is adopted |
| Subscription tier | A bundle at a monthly or annual price | Moving up a tier | Features you need in a higher tier |
| Services | Implementation and vendor analysts | Complexity and support model | Ongoing service fees not in the first quote |
How long does implementation take for Inventory Optimization & Replenishment?
Inventory projects stand or fall on data and trust. Planners who have managed stock by experience will override a system they do not trust, and a system fed incomplete lead times will deserve the overrides. The phases below build both.
Clean item, location and supplier master data, including lead times, pack sizes and shelf life. Measure current stock, stockouts and waste as the baseline.
Run a backtest on a past season, then pilot on one category or region with planners reviewing every proposal. Track how often they override and why.
Let the system release orders automatically for the items where overrides have dropped. Keep planners on exceptions, promotions and new items.
Extend to more categories, locations and modules. Review stock, service and waste against the baseline each quarter.
What should you ask vendors about Inventory Optimization & Replenishment?
Ask each vendor to answer using your own data wherever possible.
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Do you run retail stores where most inventory is lost at shelf level?Yes Shortlist retail store automation or unified retail planning, and include space planning if planograms matter.No Your inventory is mostly in warehouses; continue.
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Is the same item stocked across several tiers of a network?Yes Shortlist network inventory optimization.No An ERP planning add-on may be enough.
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Is demand unusual or sparse, such as spare parts?Yes Include forecasting with expert services.No Standard forecasting and replenishment will cover it.