Inventory Management Software for Fashion Resellers

Your entire inventory.
Every channel. One place.

Oly is the multi-channel inventory management solution built for luxury and fashion resale businesses. Sync, track, and control your catalog across every marketplace — with the platforms, automation, and dedicated support your operation demands.

0

Oversells, ever

Real‑time

Inventory sync

9+

Platforms managed

10h

Saved per week

What is Inventory Management?

The foundation of
every reselling business.

Inventory management is the process of tracking, organizing, and controlling the products you have available for sale — across every channel you sell on. For fashion resellers, it means knowing exactly what's listed, where it's listed, and the moment it sells.


Without a proper inventory management solution, resellers face overselling, manual delisting, and hours of administrative work. Oly eliminates all of it.

What inventory management covers
A complete inventory management system handles everything from the moment you acquire an item to the moment it sells — across every platform simultaneously.
  • Tracking stock levels across all sales channels
  • Syncing availability in real time when items sell
  • Organizing product details, photos, and descriptions
  • Preventing overselling and double sales
  • Automating delisting when inventory reaches zero
  • Reporting on what's selling, where, and how fast
Inventory managed across all major platforms
Poshmark Vestiaire Collective Joli Closet Rebelle The Vintage Bar Grailed eBay Miinto Shopify WooCommerce
Inventory Management Features

Multi-channel inventory management
built for apparel resellers

Oly's inventory management services go beyond basic stock tracking. Every feature is designed around the specific realities of fashion and apparel reselling at scale.

01

Real-Time Multi-Channel Sync

The moment an item sells on any platform, Oly's multi-channel inventory management software removes it everywhere else. No manual delisting, no overselling — ever. Your stock levels are always accurate.

02

Poshmark Inventory Management

Manage your Poshmark closet alongside every other marketplace from a single dashboard. Oly's Poshmark inventory management software keeps your listings live, synced, and automatically removed the moment a sale happens.

03

Apparel Inventory Management

Fashion items have unique attributes — size, condition, brand, colorway. Our apparel inventory management software understands these nuances and maps them correctly to every platform's taxonomy automatically.

04

Centralized Catalog View

See your entire inventory in one place — regardless of how many platforms it's listed on. Filter by status, platform, category, or age. Your full catalog, always visible, always current.

05

Bulk Import & Catalog Migration

Already selling on Shopify, WooCommerce, or a marketplace? Import your entire existing inventory into Oly in minutes. No re-entry, no reformatting — your catalog syncs automatically.

06

Sales & Performance Tracking

Track which items sell, on which platforms, and how fast. Oly's inventory management solution gives you the data to make smarter sourcing decisions and optimize your catalog over time.

How It Works

Inventory management services
that run themselves

01

Connect Your Channels

Link Poshmark, Vestiaire, eBay, Shopify, and any other platform to Oly. Your existing inventory is imported automatically — no manual data entry required.

02

List Once, Sync Everywhere

Add a new item to Oly once. Our multi-channel inventory management software publishes it to all your connected platforms, formatted correctly for each one.

03

Sell — We Handle the Rest

When a sale comes in, Oly instantly updates your stock across every channel. Your apparel inventory management is always accurate, always live, always in sync.

04

Grow Your Catalog

With inventory fully automated, you focus entirely on sourcing. Scale your catalog from dozens to thousands of items without adding administrative overhead.

Why Oly

Not just another
inventory management solution

Most multi-channel inventory management software stops at syncing stock. Oly goes further — with the platforms, automation, and human support that actually grow your reselling business.

🛍

Every major resale marketplace

Oly connects to the platforms that matter most for fashion resellers — Vestiaire Collective, Vinted, Grailed, and eBay — alongside Shopify, WooCommerce, and more. Our multi-channel inventory management software covers the full secondhand market in one place, where competing tools don't.

Order management included

When a sale comes in from any resale marketplace, Oly automatically creates a corresponding order on Shopify. No other apparel inventory management software does this. Your sales flow directly into your existing operations — zero manual handling.

🎯

Data mapping that converts

Generic inventory management solutions dump your listings onto marketplaces and hope for the best. Oly maps every field — title, brand, condition, size, category — to each platform's exact requirements, producing optimized listings that rank better and sell faster.

👤

Real humans, not bots

Every Oly customer gets a support team that responds within 48 hours — guaranteed. On higher tiers, a dedicated account manager reviews your catalog, gives personalized feedback, and actively works with you to improve your sell-through rate. No chatbots. No ticket queues with no end.

🔄

Automated bumps & price drops

Items unsold after 90 days are automatically relisted to regain visibility. You can also agree on a price-drop schedule with your account manager — Oly applies reductions on your behalf at the right cadence. Your inventory stays active and competitive without you lifting a finger.

The Oly Difference

What great inventory management
actually gives you

Zero Overselling

Real-time inventory sync across every platform means a sold item is instantly unavailable everywhere. Our multi-channel inventory management software makes double sales impossible.

Hours Back Every Week

Manual inventory updates, platform-by-platform delisting, and spreadsheet tracking are gone. Oly's inventory management solution automates the work that used to consume your day.

Catalog Clarity at Scale

Whether you have 100 items or 10,000, your full inventory is visible in a single dashboard. No more hunting across tabs to know what's live, what's sold, and what needs attention.

Faster Sales, More Revenue

Items managed through Oly's multi-channel inventory management software are live on more platforms simultaneously — which means more buyer exposure and faster sell-through rates.

Platform-Ready Listings

Oly's apparel inventory management software formats every listing correctly for each platform. Proper categories, conditions, sizing, and brand fields — automatically, every time.

Built for Fashion Resale

Unlike generic inventory management services, Oly is purpose-built for apparel and luxury resellers. Every detail — from field mapping to supported platforms — reflects how this industry actually works.

"Oly allows us to save a considerable amount of time on a daily basis and contributes to the international expansion of our offer. The automatic listing of our products on different resale marketplaces is a real asset in our entire sales process."
Romain, Co-founder of Ormain  ·  Luxury Consignment Store, Biarritz & Toulouse
FAQ

Questions about
inventory management

Inventory management for resellers means tracking which items you have available, where they're listed, and keeping stock levels accurate across every platform you sell on. For multi-channel sellers, this also means automatically syncing availability so that when something sells on Poshmark, it's instantly removed from Vestiaire, eBay, and everywhere else.
Yes. Oly's Poshmark inventory management software connects directly to your Poshmark closet and manages it alongside all your other marketplaces. When an item sells on Poshmark, it's automatically delisted from every other connected platform — and vice versa. No manual action needed.
Most inventory management solutions are designed for general e-commerce — they don't understand the specific requirements of fashion resale platforms like Vestiaire Collective, Grailed, or Rebelle. Oly is purpose-built for apparel and luxury resellers, with platform-specific field mapping, condition handling, and luxury marketplace integrations built in from the start.
Oly's multi-channel inventory management software maintains a single master record for each item in your catalog. When you list an item, it publishes to all connected platforms simultaneously. When it sells on any platform, Oly detects the sale in real time and removes the item from every other marketplace. Your stock is always perfectly synchronized.
Absolutely. Oly was designed specifically for fashion and apparel resellers. It handles garment-specific attributes like size, gender, condition, and brand — mapping them correctly to each platform's taxonomy. Whether you're managing vintage clothing, luxury handbags, or contemporary streetwear, Oly's apparel inventory management tools are built for your workflow.
Yes — and it goes far beyond what any spreadsheet can do. Oly's inventory management services automate stock tracking, cross-platform syncing, and delisting in real time. There's nothing to update manually. You get a live, always-accurate view of your entire catalog without maintaining a single formula or row.

Take control of
your inventory today.

Get in touch to see how Oly's multi-channel inventory management software can be configured for your business.

Contact Us →

Inventory Management Solutions for Fashion Resellers

Oly is the inventory management solution built exclusively for professional apparel and luxury resellers. Unlike generic inventory management services, Oly understands the specific platforms, field requirements, and operational realities of fashion resale. Whether you need Poshmark inventory management software, apparel inventory management tools, or a complete multi-channel inventory management system, Oly is purpose-built for your workflow.

Multi-Channel Inventory Management Software That Actually Syncs

Oly's multi-channel inventory management software connects every major fashion resale marketplace in a single dashboard. Stock levels sync in real time across Poshmark, Vestiaire Collective, eBay, Grailed, Shopify, and more. Our multi-channel inventory management system eliminates overselling, automates delisting, and gives you complete visibility over your entire catalog — however large it grows.

Apparel Inventory Management Software Built for Scale

Managing apparel inventory across multiple channels requires more than a spreadsheet or a generic tool. Oly's apparel inventory management software handles the nuances of fashion — size charts, condition grading, luxury brand taxonomies — and formats every listing correctly for every platform. It's the inventory management solution that scales with your reselling business, from 100 items to 10,000 and beyond.

Save time. Increase your sales.
If you are a professional fashion reseller and looking for a solution to manage your online inventory automatically on all your sales channels, become one of our users!
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