Every 3PL WMS vendor leans on the same three words: Automation, Visibility, and Scalability. Of course, these three are important and worth the fanfare. But it also allows gaps in other areas to show up later, once you're running 20 clients and the per-client fees have quietly doubled your bill.
In this guide, we'll show you what to look for, what to skip, and why Zenventory delivers best-in-class functionality for 3PL operators who need real-time multi-warehouse visibility, smart shipping rules, and client portals that actually reduce your inbox volume.
Keep reading to learn more ...
We weighted the stuff 3PL operators actually complain about, not the stuff that demos well.
Here's what we looked for ...
Zenventory is a cloud WMS built specifically for third-party logistics providers and growing e-commerce brands.
Why this matters: A lot of platforms started as retail WMS and bolted on 3PL features later. Zenventory was designed for multi-client operations from day one.
What sets Zenventory apart is how much runs in one system: Inventory, order management, automated billing, client portals, and shipping all live on the same platform, so your team stops bouncing between tabs and your data stops sitting in silos. This unified approach allows 3PLs to reclaim hours every week and drastically cut down on routine client inquiries.
Shipping is where that really shows. ZenShip, the engine built into the platform, includes multi-carrier rate shopping and pre-negotiated discounts up to 90% off published rates. Also, Zenventory customers ship on time 95% of the time. **No separate shipping subscription required.**
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Extensiv (formerly 3PL Central) has been serving 3PLs since 2006. You get inventory management, order processing, and a large library of shopping cart and marketplace connectors. Their Customer Portal also gives clients self-service inventory and order data, which cuts routine questions.
It's grown mostly through acquisition, folding 3PL Central, Skubana, and CartRover into one suite. You get a lot in one platform, but stitching the modules together can get fiddly.
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ShipHero is a WMS with strong mobile pick-and-pack. The 3PL packages include unlimited customer portals and SKUs, and the rate shopper compares carriers at checkout to surface cheaper options. You also get lot and expiration tracking, returns, and order-routing automation.
ShipHero also reports 99%+ picking accuracy through barcode-verified workflows.
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CartonCloud pairs warehouse management with transport management, which is useful if you handle both. It started in Australia and has expanded into the US. The automated invoicing turns warehouse events into invoices and syncs to your accounting software, and you get configurable rate cards plus smartphone-based scanning.
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ShipBob is both a fulfillment provider and a WMS licensor. You can license the same platform ShipBob runs across its 60+ fulfillment centers and operate your own warehouse, with order management, inventory tracking, and analytics. It ties into ShipBob's broader network, including regional sort centers and carrier relationships.
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Infoplus calls itself a warehouse management ecosystem. The draw is "Building Blocks," drag-and-drop automation rules for complex workflows, plus rate shopping, lot and serial tracking, and job-based fulfillment. Infoplus reports over 6,500 businesses on the platform and customers hitting 92% same-day shipments.
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A portal turns reactive support into self-service. Instead of fielding "where's my inventory?" and "did that order ship?" all day, clients log in and answer their own questions. This instantly lightens your support load while driving up client satisfaction.
It also matters more when it's white-labeled because clients see your brand, not your software vendor's.
For example, Zenventory includes a white-label portal on every plan, so clients can check real-time inventory, track fulfillment status, and pull their own data without emailing your team.
Smart shipping rules automate carrier selection against criteria you set: Weight range, destination zone, delivery speed, client contract. The system applies your rules and picks the right carrier instead of you rate-shopping every order by hand.
That is helpful because it protects your transportation margin. So, when you're shipping thousands of orders a month, a few cents saved per package compounds fast.
Zenventory's engine does multi-carrier rate shopping automatically and lets you set client-specific carrier rules. A few things you can automate ...
When you're deep in vendor evaluations, the feature lists blur. Everyone claims real-time visibility. Everyone promises automation. What actually separates these tools is how the features hold up in a multi-client environment, and what the bill looks like when you scale.
Zenventory runs inventory, fulfillment, automated billing, client portals, and shipping on one platform. That means your team stops logging into four separate systems just to ship a single order, and your clients get instant self-service without buying extra software. Plus, having shipping built right in keeps your profit margins intact.
Pricing is the other piece. Most 3PL platforms charge per user or per client, so your bill grows every time you hire a picker or win an account. Zenventory is a flat monthly rate with unlimited users, clients, and integrations. You don't get penalized for growing.
The honest caveat: If you need EDI for big-box retail distribution, Zenventory is not your tool today. For everyone else running multi-client fulfillment, take a look.
Book a demo and we'll walk through your actual workflows.
It's a platform built for third-party logistics providers to track inventory, process orders, handle billing, and coordinate fulfillment across multiple clients at once. Unlike a retail WMS, it supports client-specific workflows, segregated data, and automated invoicing for services rendered.
Zenventory was built for exactly this, with multi-client architecture at the core rather than added later.
The ones that actually keep orders moving across multiple clients … multi-channel order import that pulls every marketplace and shopping cart into one queue, automated order routing that sends each order to the right warehouse based on stock levels and client rules, rule-based automation (auto-select the shipping method, prioritize expedited orders, hold high-risk ones for manual review), client self-service portals for placing and tracking orders, and integrated shipping with carrier rate shopping. Those all hit fulfillment speed, client satisfaction, and margin directly.
It also helps if the OMS lives in the same platform as your inventory, warehouse, and billing tools, since separate systems are where most reconciliation and sync problems start.
It means tracking inventory levels and locations across every facility in real time.
Good software shows what's in stock, where it's stored, and which client owns it, all from one dashboard.
Zenventory does this with location-level detail and automated sync across connected facilities.
Manual invoicing causes two problems: Missed charges that cost you money, and errors that erode client trust.
Automated billing logs every receiving fee, storage charge, handling cost, and shipping upcharge as it happens, so when the period closes the invoice is accurate and ready.
Zenventory ties charges to warehouse activity and produces statements that are reconciled and audit-ready.
Yes. Most 3PL OMS platforms connect to Shopify, Amazon, Walmart, and BigCommerce, so orders flow from your clients' stores straight into your WMS.
Zenventory connects natively to those marketplaces and supports custom builds through its REST API.
A WMS handles storage, picking, packing, and shipping. An OMS handles order capture, routing, and lifecycle tracking. Plenty of 3PL platforms, Zenventory included, combine both so you're not paying for two subscriptions.