Large product catalogs become harder to control when inventory comes from several suppliers, warehouses, or external systems. A single outdated feed can leave shoppers looking at products that are no longer available. Replenishment also becomes difficult when purchasing teams cannot clearly see which items are moving and which ones are sitting in storage. BigCommerce inventory management software can reduce this manual work by giving specific parts of the operation a more reliable data flow. The challenge is choosing BigCommerce shipping apps that solve separate problems instead of stacking several apps around the same task.
Supplier coordination is only one part of the picture because stock information eventually affects fulfillment and customer expectations. Merchants may need one app for forecasting, another for inventory sync, and another for handling products that temporarily run out. Large catalogs also create more shipment updates that customers expect to receive without contacting support. No single tool in this selection has to control the entire workflow. Here are the six apps we selected for different parts of catalog and supplier management.
Six Tools for Different Parts of the Inventory Chain
The apps below approach catalog complexity from different directions rather than competing for exactly the same role.
WISMOlabs handles communication after an order ships, while Flxpoint works with product, supplier, inventory, and order data across connected sources. Inventory Planner supports demand forecasting, and SkuVault Core concentrates on warehouse stock control. Extensiv Integration Manager moves operational information between BigCommerce and fulfillment systems, while Back Order by GritGlobal helps stores continue taking appropriate orders during temporary shortages.
The selected apps are:
- WISMOlabs Post-Purchase Platform: Brings shipment tracking, branded updates, and delivery communication into the post-purchase stage;
- Flxpoint: Connects supplier feeds with listings, quantities, pricing, and order routing across ecommerce channels;
- Inventory Planner: Uses sales and stock information to support forecasting and replenishment decisions;
- SkuVault Core: Helps warehouse teams maintain accurate inventory records across larger product ranges;
- Extensiv Integration Manager: Moves orders, inventory levels, shipment confirmations, and tracking data between connected systems;
- Back Order by GritGlobal: Lets merchants manage backorders and continue selling selected products when regular inventory is unavailable.
This mix gives merchants several ways to address catalog problems without expecting every app to perform the same job. A useful starting point is identifying whether the current weakness sits with suppliers, forecasting, warehouse accuracy, system connections, backorders, or customer communication.
1. WISMOlabs Post-Purchase Platform
WISMOlabs focuses on the customer experience after an order is placed. Its BigCommerce shipping app automatically synchronizes shipment data from the store and uses that information for branded tracking and personalized notifications. Customers should not need to understand your supplier network to follow an order. WISMOlabs uses the connected order and shipment details, available customer information, timing, and merchant rules to decide when to communicate or trigger another action, then adapts the tracking page or response to that order. Proactive updates can reduce the need for buyers to contact support simply to ask where a package is. WISMOlabs therefore works as a post-purchase platform alongside inventory systems instead of trying to replace them.
Most useful for: Retailers that want delivery information to stay clear even when products come from different suppliers or stocking locations. It is especially relevant when growing order volume makes manual shipment communication difficult to maintain.
Catalog size can make delivery communication increasingly fragmented once orders begin leaving different fulfillment points. A dedicated post-purchase layer gives customers one consistent way to follow progress. WISMOlabs supports this stage through:
- Automatic BigCommerce shipment synchronization;
- Branded tracking experiences with coverage for 1,600+ carriers;
- Personalized delivery notifications;
- Proactive shipment updates;
- Centralized post-purchase communication.
The platform is a logical addition when operational data exists, but customers are not receiving that information in a consistent format.
2. Flxpoint
Flxpoint is built for retailers working with distributed inventory, suppliers, dropshipping, and multiple ecommerce channels. BigCommerce can function as a supported sales channel, allowing Flxpoint to import and publish listings, synchronize price and quantity, retrieve orders, and write tracking information back after fulfillment. Its inventory tools can also connect warehouses, stores, and suppliers through existing connectors or custom file mapping. This is valuable for merchants whose catalog information originates outside BigCommerce and changes frequently. Instead of maintaining each source separately, teams can establish rules for how supplier and channel data should move through the operation.
A strong match for: Retailers with supplier-driven catalogs, dropship operations, or inventory spread across several sources. It becomes more relevant as manual updates between vendors and sales channels start consuming too much time.
Supplier data can affect availability, pricing, product information, and fulfillment decisions at the same time. Flxpoint gives merchants a way to connect those moving parts before inconsistencies reach the storefront. Relevant functions include:
- Supplier and warehouse inventory connections;
- BigCommerce price and quantity synchronization;
- Product listing import and publishing;
- Order retrieval and routing workflows;
- Tracking information returned after fulfillment.
For merchants managing a broad supplier network, Flxpoint addresses the source side of BigCommerce inventory sync rather than only displaying stock already stored in the platform.
3. Inventory Planner
Inventory Planner addresses the forecasting and replenishment decisions that become difficult as SKU counts increase. Instead of treating every product equally, merchants can use sales and inventory information to estimate future stock requirements. This helps purchasing teams identify products that may need replenishment before availability becomes a problem. Historical demand, lead times, and seasonal changes can provide context for these decisions. The result is a planning layer that sits before warehouse handling and customer fulfillment.
Particularly suitable for: Merchants with enough products that purchasing decisions can no longer be managed reliably through spreadsheets or basic stock counts. It is also useful for teams trying to reduce both shortages and unnecessary inventory.
Forecasting becomes more important when hundreds or thousands of SKUs compete for purchasing budget and warehouse space. A clear replenishment process helps teams decide where additional stock is actually justified. Inventory Planner can support this work through:
- Demand forecasting for individual products;
- Replenishment recommendations;
- Analysis of historical sales patterns;
- Consideration of supplier lead times;
- Planning across multiple inventory locations.
This makes the app relevant earlier in the inventory cycle, before a temporary shortage turns into a fulfillment or customer service issue.
4. SkuVault Core
SkuVault Core is oriented toward warehouse inventory control and the physical movement of products through ecommerce operations. Large catalogs make accurate stock records difficult when items are received, stored, picked, and sold throughout the day. Warehouse teams need to know both how much inventory remains and where products can be found. Reliable records also reduce the gap between what a storefront shows and what workers can actually locate for fulfillment. SkuVault Core gives this warehouse stage a dedicated inventory system rather than relying solely on storefront quantities.
A practical choice for: Businesses whose catalog problems originate inside the warehouse rather than with supplier feeds or customer communication. It can be especially useful when growing SKU counts make manual stock checks and location tracking inefficient.
Accurate BigCommerce inventory management depends on physical stock records being trustworthy before they reach other connected systems. Warehouse processes therefore deserve the same attention as storefront synchronization. SkuVault Core can assist with areas such as:
- Warehouse inventory visibility;
- SKU-level stock control;
- Product location tracking;
- Receiving and picking workflows;
- Inventory records for larger catalogs.
Its role is strongest when merchants need tighter control over the products they physically store and fulfill themselves.
5. Extensiv Integration Manager
Extensiv Integration Manager connects BigCommerce with the systems that process orders and fulfillment data. Its documented workflow retrieves new BigCommerce orders and sends them to a connected WMS or OMS. Shipment tracking and updated inventory levels can then move back through Extensiv to BigCommerce. The integration also supports detailed shipment confirmation, giving merchants a defined route for fulfillment information. This makes it useful when the main problem is not missing data but disconnected software.
Designed for: Merchants that already use separate warehouse, order management, or shipping systems and need those platforms to exchange information with BigCommerce. It is less about forecasting demand and more about keeping existing systems connected.
Large catalogs can expose integration problems quickly because more SKUs and orders create more opportunities for records to fall out of sync. Automating these transfers reduces the amount of operational information employees need to copy manually. Extensiv Integration Manager supports:
- BigCommerce order downloads;
- Order delivery to WMS or OMS platforms;
- Inventory synchronization back to BigCommerce;
- Detailed shipment confirmation;
- Tracking information returned to the storefront.
For merchants with an established software stack, this type of connection can be more useful than adding another standalone inventory database.
6. Back Order by GritGlobal
Back Order by GritGlobal addresses the point where inventory has already reached zero, but the merchant still has a reason to accept customer orders. This can matter when replenishment is expected and temporarily hiding a popular product would interrupt sales unnecessarily. Backorder tools give retailers more control over how unavailable items are presented and purchased. They can also help distinguish products that should remain orderable from those that genuinely need to disappear from sale. That makes the app relevant to catalog continuity rather than routine warehouse tracking.
Best suited to: Stores that regularly experience temporary stockouts on products they know will return. It can also help merchants working with longer supplier lead times where an unavailable status does not always mean the item should stop selling.
Backorders need clear rules because accepting an order without realistic replenishment expectations can create a poor customer experience. Merchants should decide which products qualify and how expected availability will be communicated before enabling continued sales. Useful functions for this situation include:
- Backorder support for temporarily unavailable products;
- Continued selling of selected out-of-stock items;
- Product-level control over backorder availability;
- Customer messaging around delayed fulfillment;
- Support for stockout-based selling workflows.
Used selectively, the app can keep suitable products available while the rest of the inventory stack handles forecasting, replenishment, and stock accuracy.
Final Thoughts
Managing a large BigCommerce catalog is easier when supplier feeds, warehouse stock, forecasting, integrations, and customer communication are treated as separate operational jobs. Flxpoint can address supplier-driven data, Inventory Planner supports replenishment planning, and SkuVault Core gives warehouse teams stronger stock control. Extensiv Integration Manager connects existing systems, while Back Order by GritGlobal provides another option when temporary shortages occur. WISMOlabs completes the later stage by turning shipment data into customer-facing tracking and delivery updates.
The right combination depends on where catalog complexity currently creates the most manual work or inaccurate information. A merchant with supplier feed problems will need a different starting point from a retailer struggling with warehouse records or frequent stockouts. Adding every app at once is rarely as useful as fixing the most disruptive gap first. From there, the software stack can grow around clearly defined inventory and fulfillment needs.
