Overview

Streamline brings statistical forecasting and inventory planning together: it can turn imported sales and inventory information into forecasts, replenishment orders, and demand and revenue plans. That joined-up scope is useful for teams that need planning to inform stock actions, not just produce projections. It is less compelling for organizations that need a standalone forecasting tool or whose existing data systems are not supported.

For a wider category comparison, see Replenishment Software.

Key features

Forecasts that feed inventory decisions

Reorder point automation, safety stock planning, multi-location planning, and transfer recommendations complement the forecasting and replenishment workflow. Together, these capabilities address decisions about stock levels and movement across locations. Their practical value depends on having reliable sales and inventory data to import.

Data connections and order exports

Streamline can import from spreadsheets, ODBC-connected databases, and supported accounting or inventory systems. Integrations include SAP, Oracle NetSuite, Microsoft Dynamics, QuickBooks, Odoo, Shopify, and Cin7. For bidirectional integrations, recommended replenishment orders can be exported back to the connected system, reducing the gap between a plan and its execution. Teams should confirm that their particular system is supported before committing.

Deployment and security

Streamline is offered across Windows, macOS, web, and self-hosted environments. Streamline Server is a Windows service that lets multiple users work simultaneously on one project file, which can suit teams sharing planning work. For hosted solutions, the maker says transfers between client and server use TLS encryption, passwords are hashed on the server, and they are encrypted over the network.

The maker recommends Windows and a virtual machine with a minimum two-core, 3+ GHz processor; projects above 100,000 SKUs call for 16 GB of RAM. That makes deployment requirements worth considering for large planning workloads. macOS support starts at version 10.14, but the Mac package is not signed with an Apple-issued certificate, a potential installation concern for some users.

Pricing

Free Edition

The Free Edition is free. It allows up to US$ 1M in Annual Revenue, up to 1000 Planning Items (SKUs × Locations), and up to 10,000 Annual Sales Quantity. Those caps make it a practical starting point for smaller operations, but businesses exceeding any one of them will need another arrangement.

Customized pricing

Customers can request customized pricing based on their needs, and the company invites them to describe those needs so a Streamline expert can help choose a solution. There is no published price to compare against the free edition, so teams with higher volumes should ask for a quote before planning a budget.

Platforms

Streamline supports Windows and macOS, as well as web and self-hosted deployments. The combination gives buyers options for desktop use or managed deployment, though the Mac certificate caveat and Windows-oriented server requirements may influence the choice.

Who it's for

Streamline is a strong candidate for businesses that manage inventory across products or locations and want statistical forecasts tied to replenishment, safety stock, reorder points, or transfers. The free edition can suit organizations within its revenue, planning-item, and annual-sales limits. Larger businesses should consider it when its data connections and deployment model fit their operations and customized pricing makes sense.

It is a weaker fit for teams seeking a published, predictable price beyond the free tier, or for organizations that cannot use its supported data connections and deployment options.

Pros and cons

Pros: Forecasting connects to replenishment orders and demand and revenue plans, so the workflow extends beyond projections.
Pros: Multiple import routes and named business-system integrations can accommodate varied data setups; bidirectional integrations can send recommended orders back.
Pros: The free edition gives smaller businesses a no-cost starting point within defined operating caps.
Cons: The free edition's revenue, planning-item, and annual-sales limits can constrain growing operations.
Cons: Pricing beyond the free edition is customized, making costs harder to assess before contacting the company.
Cons: The Mac package lacks an Apple-issued signature, while server deployment has Windows-specific requirements.

Alternatives

eTurns TrackStock is worth considering for teams that want a paid stockroom product with Android, iOS, and web access; its Replenish — stockroom plan is 40.00 USD per month, billed semi-annually, with unlimited users, items, and suppliers.

Flowlity may suit teams looking for a paid web and API option with a published entry tier: Flowlity Lite is 249.00 EUR per month, with up to 5,000 SKUs, CSV upload, and no ERP integration.

Optiply is another paid web and API alternative, with an Optiply Lite plan at 79.00 EUR per month for up to 1,000 sales orders per month and up to 1,000 SKUs.

Prediko has a Starter plan at 49.00 USD per month for stores up to $100K in revenue, making it an option for businesses that fit that stated revenue threshold.

ReOrder may fit a Shopify store seeking a paid plan at 49.00 USD per month per store after a 14-day guided trial.

LEAFIO AI Replenishment Software offers custom pricing and invites buyers to contact the company for a demo and quote.

pacemaker.ai Replenishment Decision Intelligence is another paid option for buyers comparing replenishment software.

Blue Ridge Replenishment Optimization is a paid web option with custom pricing and a demo booking route.

Verdict

Choose GMDH Streamline if your business needs forecasts tied to replenishment planning, has compatible data connections, and can work within the free edition's caps or justify customized pricing. Its breadth—from statistical forecasts to recommended orders and multi-location planning—is the central reason to choose it. Look elsewhere if you need transparent pricing beyond a tightly capped free tier, or if its Mac installation caveat and Windows-oriented server requirements do not suit your environment.

	GMDH Streamline	Slimstock Slim4
Free plan	Yes
Paid from	Free
Platforms	macOS, self-hosted, Web, Windows	self-hosted, Web
Free plan	Yes
Reorder point automation	Yes
Safety stock planning	Yes	Yes
Multi-location planning	Yes	Yes
Transfer recommendations	Yes	Yes
Multi-location optimization		Yes

GMDH Streamline vs Slimstock Slim4

GMDH Streamline

Slimstock Slim4