One sale on Shopee. Stock updates on Amazon, Shopify, TikTok Shop, Lazada, and every other channel — instantly. OneCart's event-driven inventory sync keeps your stock accurate across 50+ platforms so you never oversell again.
Most inventory tools poll your channels every 15–30 minutes. During a flash sale, that delay causes overselling. OneCart uses event-driven webhooks — stock updates propagate in seconds, not minutes.
A customer buys on any connected channel — Shopee, Amazon, your Shopify store, TikTok Shop, Lazada, or any of your 50+ platforms.
The platform sends a webhook to OneCart. Your central inventory count updates immediately — no waiting for the next sync cycle.
OneCart pushes the new count to all your other channels within seconds. Customers everywhere see accurate availability.
Five units in stock. Listed on Amazon, Shopee, Shopify, and Lazada. Over a busy weekend, seven units sell across those platforms. Two customers get cancellation emails. You eat the refund, the shipping cost, and the seller rating hit.
Marketplaces penalise overselling harshly. Amazon tracks your cancellation rate and can suspend your account. Shopee and Lazada have similar policies. One bad 9.9 or 11.11 sale with inventory chaos sets your business back months.
Tools that sync every 15 minutes don't solve this during flash sales. Event-driven sync does.
Start Your Free TrialEverything you need to manage inventory across every sales channel from a single dashboard.
Event-driven inventory updates across all channels within seconds. Not batched. Not scheduled. Instant.
One view of all your SKUs, stock levels, and channel status. Stop logging into five seller centres to check inventory.
Sell a bundle on Amazon? Component stock deducts automatically across every channel. No manual calculations.
Get notified before you run out. Set custom thresholds per SKU or channel to prevent stockouts before they happen.
See who changed what, when, and on which channel. Every inventory adjustment is logged for compliance and troubleshooting.
Ask questions in plain English: "Which SKUs are at risk of stockout this week?" Get instant answers without digging through reports.
Native integrations with the marketplaces, webstores, and ERP systems that matter to multichannel sellers.
| Category | Platforms |
|---|---|
| SEA Marketplaces | Shopee, Lazada, TikTok Shop, Qoo10, Zalora, NTUC FairPrice, Redmart |
| Global Marketplaces | Amazon (all regions), Temu, Decathlon |
| Webstores | Shopify, WooCommerce, Magento |
| ERP & Accounting | Oracle NetSuite, SAP Business One, Xero, QuickBooks |
| Logistics | SPX Express, and more |
Selling on Shopee, Lazada, and TikTok Shop? Most Western inventory tools don't support these platforms at all. OneCart was built for them.
Manage inventory across Amazon US, Shopee Singapore, Lazada Malaysia, and your own Shopify store — all from one place, with one stock count.
Outgrown spreadsheets? Processing 50+ orders a month across channels? That's exactly when automated inventory sync pays for itself.
View and manage all SKUs from every platform. Filter by channel, warehouse, or stock status. No more switching between five seller centres.
Orders at 3 AM on a Saturday? Inventory updates propagate immediately. No business hours. No batching. No gaps.
Connect your channels with OAuth — no developer needed. Import your catalogue, map your SKUs, and start syncing. See the setup guide.
See What Others Are Saying.
OneCart has really helped me a lot, especially during the Circuit Breaker period. The stock auto-adjusts and I can see all my inventory info easily without going into office.
Just the order processing alone in OneCart has saved us 3 hours a day. Our warehouse is more efficient, which makes our deliveries faster, and our customers happier.
Very impressed with the aftersales support for OneCart. If we need any assistance, the team is quick to reply and is focused on helping us achieve our goals.
Multichannel inventory management is the process of tracking and synchronising stock levels across all your sales channels from a single system. Instead of manually updating inventory on Amazon, Shopee, Shopify, and Lazada separately, a multichannel inventory system does it automatically — keeping counts accurate everywhere you sell and preventing overselling.
When an item sells on one channel, inventory management software immediately reduces the available quantity on every other connected channel. With event-driven sync (like OneCart uses), this happens within seconds. Scheduled sync tools that update every 15–30 minutes leave a window where the same item can sell twice on different platforms — especially dangerous during flash sales or peak periods. Learn more about preventing overselling in ecommerce.
Real-time (event-driven) sync updates inventory within seconds of an order, using webhooks and API callbacks. Scheduled sync polls your channels at fixed intervals — every 15, 30, or 60 minutes — and pushes updates in batches. For sellers running promotions, managing limited stock, or selling on platforms with strict overselling penalties, real-time sync is essential. For a deeper comparison, see our multichannel inventory software comparison.
OneCart integrates with 50+ platforms including Amazon (all regions), Shopee, Lazada, TikTok Shop, Shopify, WooCommerce, Magento, Qoo10, Zalora, Temu, NTUC FairPrice, and Redmart. We also connect to ERP and accounting systems like Oracle NetSuite, SAP Business One, Xero, and QuickBooks. See the full integration list.
Most sellers connect their first channel within 10 minutes using OAuth authentication — no developer required. Full setup including SKU mapping and testing typically takes a few hours. For larger catalogues or complex multi-warehouse setups, our team provides guided onboarding to get you live quickly.
OneCart plans start at S$48/month for up to 2 platforms and 500 SKUs, scaling to S$688/month for 20 platforms and 20,000 SKUs. All plans include real-time sync, and every plan starts with a free trial. See pricing details.