10 Best Distribution Resource Planning Solutions

Key takeaways:

• Distribution resource planning is multi-echelon planning: a central warehouse supplying branches supplying trucks. The defining problem is that a branch's lead time depends on whether the warehouse upstream actually has the stock.
• Searching the term returns distribution ERP roundups, not DRP tools. Google treats the two as synonyms, and almost nothing ranking for it is a planning product.
• Centralizing demand data helps and does not solve it. The canonical study found the bullwhip effect "can be reduced, but not completely eliminated, by centralizing demand information."
• Only one vendor here publishes a price, at $900 a month. One states openly that it works with companies budgeting at least $150,000.

Distribution resource planning is the least-understood term in this software category, partly because it is genuinely technical and partly because the search results for it are about something else entirely.

DRP is what MRP is for a manufacturer: a method for planning across several stocking locations at once, where each location's supply depends on the location above it. If you run one warehouse, you do not need it. If you run a central facility feeding branches, or branches feeding trucks that carry inventory, you are doing DRP whether or not you call it that.

This guide ranks ten systems a distributor could genuinely use for multi-echelon planning, with published pricing where it exists, and it is honest about the fact that most of them are ERPs with a planning module rather than dedicated DRP products.

What DRP Actually Means

The definition that matters comes from the paper that created the field, and it is unusually clear.

Clark and Scarf observed that almost all inventory research at the time considered a single installation, while in practice "there are several installations, say 1, 2, …, N, with installation 1 receiving stock from 2, with 2 receiving stock from 3."

Their key insight follows. If installation 1 orders from installation 2, "the length of time for delivery of this stock is determined not only by the natural lead time between these two sites, but also by the availability of stock at the second installation."

That sentence is the whole discipline. A branch's lead time is not a constant. It is short when the central warehouse has stock and long when it does not, which means planning each location independently produces plans that are individually sensible and collectively wrong.

For a food distributor the echelons are usually a central DC, one or more branch depots, and sometimes truck stock on DSD routes. Each layer holds inventory, each replenishes from the one above, and each has been planned separately in most businesses.

The practical symptom is recognizable. A branch serving the meat distributors in Miami orders to its own reorder point, the DC is short, the branch waits, and both locations' service numbers deteriorate while each set of numbers looks defensible in isolation.

The Search Results Are About Something Else

This is worth flagging because it will waste your time otherwise.

Search "distribution resource planning software" and page one returns distribution ERP roundups: top-ten lists of Business Central, NetSuite, Acumatica, Epicor Prophet 21, Infor and Sage. Not one is a DRP planning tool. Google has decided the phrase means "ERP for distribution companies" and serves that instead.

Run the literal term and the picture gets stranger. You get definitional articles, two SAP community forum threads, a Reddit discussion, a no-code platform suggesting you build your own DRP app, and an academic chapter from 2002.

Two conclusions follow. First, searchers using this phrase are mostly at the definition stage rather than the purchase stage, which is why this article spends its first section defining the term. Second, there is no incumbent comparison page, which is rare.

For a buyer, the practical consequence is that you cannot shop this category by keyword. You have to ask ERP vendors whether they have a DRP module, and ask planning vendors whether they handle multiple echelons.

There is a more precise question that sorts candidates faster than either. Ask whether the tool does transfer planning: deciding what moves from your own central facility to your own branches, on what schedule, in what quantity. Purchasing from suppliers is a solved problem that every order management system touches. Transfer planning between locations you both own is the part that defines DRP, and it is the part most vendors quietly skip.

If a vendor's answer to the transfer question is that transfers are handled as internal purchase orders, they are describing a workaround rather than a capability. That is workable at two locations and unmanageable at six.

The Best Distribution Resource Planning Solutions

All ten sit below, sorted by whether DRP is a dedicated capability or a module inside something larger. One vendor publishes a budget expectation rather than a rate.

Four of those are dedicated planning tools and five are ERPs with planning attached. The tenth is not a planning tool at all, and its entry explains why it is here.

That split is worth holding onto while reading the entries. A dedicated planner sits on top of what you run and can be removed; an ERP module arrives with an ERP and cannot. The two carry very different costs, timelines and risks, even where the planning capability on paper looks comparable.

VoiceOrder Solutions

Best for: The order data a plan runs on

Overview: VoiceOrder Solutions is not distribution resource planning software, and its own product page opens by saying exactly that. It does not plan echelons, calculate safety stock across a network, allocate scarce inventory between branches or schedule replenishment.

VOS is first on this list for a narrower reason. A DRP run is only as good as the demand it is given, and in a great many distributors a meaningful share of tomorrow's demand is not in the system when the plan is built. Orders arrive as early-morning phone calls, after the pick crew and the trucks have already been set.

What VOS changes is the timing and the form of that demand. Accounts order through the app at any hour, so orders placed late in the evening are in the system before the morning plan is built. Each one arrives as line items tied to your SKUs at that account's prices, with the account and timestamp attached.

For planning purposes, that turns a portion of tomorrow's demand from a guess into a fact. Where orders are delivered by EDI or API, the system can total them by item before anyone starts allocating.

Key features:

• Round-the-clock capture, so late orders are in the numbers before the morning plan runs
• Orders arriving as line items tied to your SKUs at that account's pricing
• Account and timestamp on every order, so volume can be counted before a shift is staffed
• Digital orders rather than handwritten notes, removing the transcription step ahead of planning
• Delivery by EDI, API or QuickBooks direct, so planning systems can total orders by item
• Each account's order history kept on file for pattern analysis

Pricing: Quoted on request. That is unremarkable in this category, where nine of the ten entries publish no rate either, and it means the comparison has to be made on fit rather than on price.

Pros: Moves demand earlier in the day so more of it is known at plan time, removes transcription ahead of planning, no planning model to configure, deploys in days, leaves the planning stack untouched

Cons: No published rate, and it performs no planning whatsoever, so multi-echelon allocation, safety stock and replenishment scheduling all require one of the nine planning systems that follow

How to start using it:

1. Record what time your morning plan is built and what proportion of that day's orders are in the system at that moment.
2. Identify the accounts whose orders regularly arrive after that cutoff.
3. Hand those accounts' order guides to VOS for setup.
4. Choose EDI or API delivery so orders can be totaled by item automatically.
5. Re-measure the proportion of known demand at plan time after a quarter.

Why it is here at all: Planning software improves the arithmetic on the demand it receives. This improves the demand it receives, and the two are complementary rather than competing.

Final verdict: Read this entry as the input to the list rather than a member of it. If you need a DRP engine, buy one of the nine below; this affects what you feed it.

Netstock

Overview: Netstock is the most accessible genuine planning layer for a multi-site distributor, connecting to an existing ERP and adding forecasting, replenishment and supplier performance across locations.

Key features:

• Planning across multiple stocking locations
• Connectors for NetSuite, Sage, Acumatica, Dynamics, SAP Business One, Cin7 and SYSPRO
• Named Food and Beverage and Wholesale configurations

Pricing: Its own pricing page states that pricing starts at $900 per month, the only published figure in this category.

Pros: Publishes a rate nobody else does, broad ERP connector list, sized for mid-market rather than enterprise

Cons: Requires an ERP underneath, entry price is meaningful for a smaller distributor, less configurable than the enterprise optimizers

Why buyers shortlist it: It is the shortest route from a multi-site ERP with no planning to a working network plan.

Final verdict: The default first purchase for a mid-market distributor with two or more stocking locations.

StockIQ

Overview: StockIQ addresses multi-DC distribution planning explicitly, which is unusual, and sizes itself for distributors between $25 million and $250 million in revenue.

Key features:

• Replenishment planning across multiple distribution centers
• Transfer planning between locations, not just purchasing
• Supplier planning with lead times and minimum orders

Pricing: Unpublished, though StockIQ commits to returning a quote within one business day.

Pros: Genuinely multi-echelon rather than multi-site reporting, distribution-native, transparent about who it serves

Cons: No published pricing, smaller vendor than the enterprise names, needs clean lead-time data to be worth its price

Its real strength: Planning transfers between your own locations, which is the DRP problem most tools reduce to purchasing.

Final verdict: One of the two strongest dedicated options for a mid-market distribution network.

Slimstock

Overview: Slimstock's Slim4 platform plans demand and inventory across networks, with a food and beverage practice deep enough to handle shelf life as a planning constraint rather than an afterthought.

Key features:

• Network-wide demand and inventory optimization
• Shelf life handled as a planning input
• Supplier and purchase planning tied to the same model

Pricing: Nothing published. Slimstock scopes the network first, then quotes.

Pros: Strongest food and beverage depth here, treats perishability properly, established across distribution networks

Cons: No published pricing, implementation is a project, more depth than a two-site operation will use

Where it beats the alternatives: Planning a network where product expires, which breaks most multi-echelon models.

Final verdict: The pick when dating drives your network decisions rather than just your warehouse ones.

Blue Ridge

Overview: Blue Ridge builds supply chain planning and replenishment specifically for distributors, which is a narrower focus than most planning vendors and a useful one.

Key features:

• Replenishment planning built around distribution rather than retail
• Demand forecasting tied to purchasing decisions
• Multi-location planning across a network

Pricing: No public rate card; quoted on scope.

Pros: Distributor-specific rather than adapted from retail, focused feature set, established in wholesale

Cons: No published pricing, less visible than the larger vendors, implementation requires clean data

Why it earns a place: Few planning vendors build for distributors first, and the difference shows in the workflows.

Final verdict: Worth including in any shortlist alongside StockIQ and Netstock.

Acumatica

Overview: Acumatica is the clearest example of DRP as an ERP module: its Distribution Edition ships a named Distribution Requirements Planning capability covering reorder points, seasonality, lead times and safety stock.

Key features:

• Named DRP module rather than generic planning
• Resource-based licensing rather than per-user
• Distribution Edition covering purchasing, sales orders and warehouse

Pricing: No published figure. Its pricing page explains a consumption-based model without stating a rate, and it sells only through partners.

Pros: DRP included rather than bought separately, no per-seat penalty for adding users, deep distribution functionality

Cons: No published rate, partner-only sales means quotes vary widely, replacing your ERP to get DRP is a large step

Why buyers shortlist it: If you were already replacing your ERP, getting DRP in the same project is efficient.

Final verdict: Strong if an ERP change is already on the table, and a very expensive way to buy planning if it is not.

Sunstice

Overview: Sunstice carries a named Distribution Resource Planning module within a supply chain planning platform, covering target setting, shipment planning and allocation when supply is short.

Key features:

• Distribution planning with explicit allocation logic
• Shipment planning between network locations
• Target setting by location and item

Pricing: No public rate card; quoted on scope.

Pros: One of very few vendors using the term precisely, handles scarcity allocation explicitly, planning-first design

Cons: No published pricing, smaller and less known than the alternatives, fewer published references to check

What it is genuinely good at: Deciding which location gets product when there is not enough, which is the hardest DRP decision.

Final verdict: Worth a look precisely because it addresses the allocation problem others gloss over.

Epicor Prophet 21

Overview: Prophet 21 is the long-standing ERP for wholesale distribution, with planning and replenishment inside a system built around distributor workflows.

Key features:

• Purchasing and replenishment built for distribution
• Multi-branch inventory and transfer handling
• Deep distributor-specific functionality across the business

Pricing: No public rate card; quoted through Epicor and its partners.

Pros: Built for wholesale distribution rather than adapted, broad functionality, large installed base to reference

Cons: No published pricing, substantial implementation, planning is a component rather than the focus

Why it made this list: Many mid-size distributors already run it and do not realize the planning capability is there.

Final verdict: Check what you already own before buying a planning layer to sit beside it.

ToolsGroup

Overview: ToolsGroup does probabilistic forecasting and multi-echelon inventory optimization, which is the mathematically serious end of this category.

Key features:

• Multi-echelon inventory optimization across a network
• Probabilistic demand modeling rather than point forecasts
• Service-level driven stock positioning

Pricing: Unpublished, and priced against the complexity of the network being modeled.

Pros: Genuine multi-echelon optimization, strong statistical foundations, handles complex networks

Cons: No published pricing, enterprise scope and cost, considerable sophistication for a three-location distributor

Why buyers shortlist it: It solves the Clark and Scarf problem properly rather than approximating it.

Final verdict: The right answer for a genuinely complex network, and over-engineered for a simple one.

NetSuite

Overview: NetSuite covers demand planning and replenishment inside a general ERP, with the advantage that inventory, orders and financials share one database across locations.

Key features:

• Demand planning and replenishment across subsidiaries and locations
• Inventory, orders and financials in one record
• Transfer order handling between locations

Pricing: Unpublished. The figure depends on which modules, how many users and how many subsidiaries.

Pros: One database removes reconciliation between locations, broad functionality, widely implemented

Cons: No published pricing, planning is less sophisticated than dedicated tools, implementation is measured in quarters

Where it fits: Distributors who want one system and can accept good-enough planning within it.

Final verdict: A reasonable answer if the ERP decision is the real decision, and not the best planning available.

How We Chose These Ten

This category required different sourcing from the rest of this series, because the search results do not contain the products. Candidates were identified by checking which ERP vendors publish a named DRP capability and which planning vendors explicitly handle multiple echelons, then verifying each on the vendor's own site.

Prices came from vendor pages where they exist, which in this category means one. Several tools here publish pricing pages that explain a model without stating a figure, which is recorded as unpublished rather than interpreted.

We excluded the general distribution ERP lists that dominate the search results, except where a specific vendor genuinely ships a DRP module. A distributor supplying the bakery distributors in Baltimore from a central facility needs planning capability, not a list of accounting systems.

Centralizing Demand Helps, and Does Not Solve It

The core promise of DRP software is one view of demand across the network. The research on that promise is more measured than the marketing.

Chen, Drezner, Ryan and Simchi-Levi quantified the bullwhip effect in a supply chain, modeling demand forecasting and order lead times as its two main causes. Extending to multiple stages, they "demonstrate that the bullwhip effect can be reduced, but not completely eliminated, by centralizing demand information."

That is a modeled result rather than a field measurement, and the model is simpler than a real distribution network. The direction, though, is the part to carry into a vendor conversation: a single demand view reduces distortion, and it does not remove it, because forecasting error and lead time remain regardless of who can see the numbers.

The practical implication pairs neatly with the Clark and Scarf definition. Centralizing the demand signal is necessary, and shortening the lead times between echelons does work that no amount of shared visibility can substitute for.

So when a vendor's business case rests entirely on network visibility, ask what it does about lead times between your own locations. If the honest answer is nothing, the projected benefit is likely overstated. The same caution applies when evaluating wholesalers ERP software on planning claims.

What to Look for in DRP Software

Five questions, and the first one eliminates most candidates.

Does it plan transfers or only purchases? True DRP decides what moves between your own locations, not just what you buy from suppliers. A tool that only generates purchase orders is doing replenishment, not distribution resource planning.

Does it model dependent lead times? The Clark and Scarf point: a branch's lead time depends on upstream availability. Ask whether the model treats it as a constant, because many do.

How does it allocate scarcity? When the DC cannot fill every branch request, something decides who gets what. If the software has no logic for it, a person does it in a spreadsheet, which is where your plan stops being a plan.

Can it plan truck stock? For DSD operations the truck is an echelon. Few tools model it, and the ones that do are usually route systems rather than planners.

What does it need from you? Lead times per lane, not per supplier. A business shipping to the produce distributors in Philadelphia from two different depots has two lead times for the same item, and most data sets record one.

Get answers to those five and the shortlist is short, because the honest number of true DRP products is smaller than this list suggests. Ask the transfer question first in every call; it sorts the field faster than any other, and a vendor who has to check is telling you the answer.

One example is worth working through, because the failure mode is hard to see in the abstract. A central facility holds eight weeks of a fast-moving line. Two branches each hold three weeks and each reorders at two. Every location's parameters are defensible, and the network is fine until a supplier misses a delivery to the center.

At that point both branches hit their reorder points within days of each other, both order, and the center can fill neither. The branches wait, and because each was planned to a two-week trigger rather than to a supply-aware one, neither had a buffer sized for an upstream outage. Both go short in the same week, for a shortage that a single facility holding the same total stock would have absorbed.

The fix is not more stock. It is planning the echelons together, so the branch trigger reflects what the center actually holds rather than assuming the center is infinite. That is the specific thing a DRP tool does and a set of independent reorder points cannot, and it is the question to put to every vendor on this page.

What DRP Software Costs

With one published price in the whole category, the table below describes shape rather than rates.

The pattern worth noticing is that buying DRP inside an ERP is rarely cheaper, because you are buying the ERP. The exception is a business already committed to replacing its ERP, where the planning module arrives as part of a decision that had been taken anyway and the marginal cost is genuinely small. Distributors operating several depots across a state like Florida usually find a planning layer over the existing ERP costs a fraction of replacing it.

Where to Start If You Run More Than One Location

Answer one question first: are your locations actually planned together today, or are they planned separately and reconciled by argument?

If separately, the first gain is not software. It is recording lead times per lane and agreeing who decides allocation when supply is short. Both are free, both take a few weeks, and both are prerequisites for any tool here producing a usable plan.

If you have those, the choice is between a planning layer over your existing ERP and a planning module inside a new one.

Be realistic about the sequencing too. Most of the value in a first DRP project comes from decisions taken before any software is configured.

Every tool here assumes your locations agree about what they hold, which means transfers recorded as they happen rather than reconciled at month end.

If your branches and your central facility routinely disagree about stock in transit, fix that first. It costs nothing but discipline. For most mid-market distributors the layer wins on cost and time, which is why Netstock, StockIQ, Slimstock and Blue Ridge are the practical shortlist while the ERP options matter mainly if you were replacing the ERP anyway.

And if you run one location, you do not need DRP at all. Adding a second stocking point is the moment the discipline starts to earn its keep, and truck stock on a DSD round counts as one even though nobody calls it a depot. What you need is replenishment, which is a simpler and better-served problem, covered in our list of the best inventory replenishment solutions.