Fashion industry software development

Fashion brands and marketplaces hit the same wall at a certain point. The platform they started on handles simple product catalogues and basic checkout, but it can't model size runs accurately, can't personalise at scale, and can't support a rental or multi-vendor operation without a stack of conflicting apps.

  • Fashion e-commerce with size run management and personalisation

  • Multi-brand fashion marketplace with vendor onboarding and inventory

  • Inventory and production management from sample to delivery

  • Fashion rental platform with item tracking and cleaning logistics

Recognition

Sound familiar?

  • Fashion brand selling on Shopify but unable to implement size-based personalisation, virtual try-on, or a loyalty programme that goes beyond discount codes without stitching together conflicting apps?

  • Fashion marketplace idea that needs multi-vendor inventory, size run management, and returns handling but has no way to model those in a generic marketplace platform?

In short

RaftLabs builds custom software for fashion brands, multi-brand marketplaces, and rental platforms. We cover fashion e-commerce with size run and variant management, multi-vendor marketplaces with split inventory and returns, production and inventory tools from sample to delivery, and rental platforms with item tracking and cleaning logistics. Most fashion software projects ship in 10 to 14 weeks at a fixed cost.

01 Diagnosis

Problems we solve in fashion

  1. 01
    Problem

    Wholesale and D2C channels fighting over the same stock

    Solution

    When a fashion brand runs both a wholesale channel and a D2C storefront from the same inventory pool, the conflict shows up fast. A D2C sale depletes stock that was already committed to a wholesale buyer. A wholesale order lands and the D2C site keeps selling against empty shelves. Most platforms don't model channel-specific stock allocation, so the brand ends up managing it by hand. That means someone on the team is checking spreadsheets before every wholesale confirmation, and D2C customers are still receiving out-of-stock emails after checkout. The fix is a single inventory layer that allocates stock per channel, reserves units against wholesale orders, and surfaces real available-to-promise figures to each storefront in real time.

  2. 02
    Problem

    Seasonal overstock costing margin every end-of-season

    Solution

    Fashion businesses buy or produce for a season based on a plan, and when that plan is wrong, the cost is immediate. Overstock sits in the warehouse, markdowns erode margin, and the capital tied up in unsold units can't fund the next season's buy. The problem usually starts with planning tools that don't talk to sales data. Buying decisions are made in spreadsheets disconnected from real-time sell-through rates, return volumes, and channel-level velocity. A planning tool that connects live sales data, return rates, and warehouse levels to the buying workflow gives the merchandising team a defensible basis for seasonal decisions, not a gut call made on last season's numbers.

  3. 03
    Problem

    Returns management slow and disconnected from inventory

    Solution

    In a multi-brand marketplace, a return needs to reach the right vendor, be restocked to the correct size bin, and trigger the right refund split. When that logic runs through email between the marketplace operator and each vendor, returns take days. Vendor relationships strain, and margin is lost on incorrectly restocked or abandoned returns. According to the National Retail Federation and Appriss Retail's 2022 Consumer Returns in the Retail Industry report, U.S. retailers processed $816 billion in merchandise returns in 2022, 16.5% of total retail sales, with online apparel returns running at a 24.4% rate. Building returns logic into the marketplace from the start removes the manual coordination and closes the loop between a return arriving and stock showing as available again.

  4. 04
    Problem

    Lookbook and showroom experience disconnected from ordering

    Solution

    Wholesale buyers still receive PDF lookbooks and place orders by email or phone. The visual presentation is separate from the order form, and the order form doesn't show real-time stock. A buyer who sees a style they want has to wait for confirmation that it's available in the size run they need. That friction slows the buying cycle and creates manual work for the sales team on every account. A digital showroom that combines editorial product presentation with real-time stock visibility and inline ordering removes the gap between seeing and buying.

What we build

  1. Fashion e-commerce platform

    Custom e-commerce platforms for fashion brands that need more than a Shopify theme can deliver. Product catalogues with full size run and colour variant management, real-time stock levels per size, personalised size recommendations based on purchase history and measurements, lookbook and editorial content with shoppable product links, loyalty programmes tied to purchases and returns, and a returns flow that triggers refunds and restocks automatically. So DTC brands get a storefront that reflects their actual inventory and customer data, not a set of conflicting apps bolted together.

  2. Fashion marketplace

    Multi-brand fashion marketplace software with vendor onboarding, per-vendor size run and inventory management, unified checkout with split payments and vendor payouts, and returns handling that respects each vendor's policy. Buyer-facing search and filtering by size, brand, style, price, and availability. Vendor dashboards with sales reporting, stock level management, and order tracking. So marketplace operators can run a curated fashion business without modelling their vendor and returns logic in a generic platform that wasn't built for it.

  3. Inventory and production management

    Inventory and production management tools for fashion businesses tracking product from sample through bulk production to delivery. Sample tracking with approval workflows, bulk production order management, quality check stages, and goods-in receiving with size-level stock allocation. Integration with supplier portals for purchase order management and delivery tracking. Warehouse management with barcode scanning and directed picking by size and style. So fashion brands managing seasonal production across multiple suppliers don't run the season on spreadsheets.

  4. Fashion rental platform

    Rental platform software for fashion businesses with item-level tracking, availability calendar management, cleaning and maintenance logistics between rentals, and deposit and subscription billing. Each item tracked by condition, location, and cleaning status so the right items are available at the right time. Returns inspection flow with damage reporting and charge triggers. So dress hire, designer rental, and fashion subscription businesses can confirm bookings reliably without overbooking or leaving items idle.

  5. Virtual try-on and personalisation tools

    Virtual try-on tools and personalisation features built into fashion e-commerce platforms. Size recommendation engines using customer measurements, past purchases, and brand-specific size charts. Style personalisation based on browsing and purchase history. Outfit suggestions using existing wardrobe data. Visual try-on using augmented reality for accessories and outerwear. These features connect to your existing product catalogue and customer data, so you don't need a separate third-party tool that sits outside your size run inventory.

  6. Wholesale and B2B ordering platform

    Wholesale ordering platforms for fashion brands selling to retail buyers and trade accounts. Buyer-specific price lists and minimum order quantities per style and size run. Seasonal lookbook ordering with visual product presentation and an order form built into the same flow. Order approval workflows, credit term management, and invoice payment options. Sales rep dashboards with account order history and outstanding balance visibility. So fashion brands managing wholesale accounts can move off spreadsheets, PDF order forms, and manual invoicing.

How we work with fashion clients

  1. 01

    Discovery

    We map your product model, size runs, variant matrix, sales channels, inventory sources, and the vendor or production relationships that need to be modelled in the platform. For marketplace builds, we document the vendor onboarding, payout, and returns workflows from the start. You receive a fixed-price specification before development begins.

  2. 02

    Architecture

    We design the data model around your actual catalogue structure: SKU-level variant tracking, size matrix, stock allocation by location, and the relationships between products, vendors, and customers. For rental platforms, we model individual item lifecycle from creation through rental cycles, cleaning, and retirement at this stage.

  3. 03

    Build

    Development runs in two-week sprints. Product catalogue, inventory management, checkout, and vendor or production management modules are built in parallel where dependencies allow. Size recommendation logic and personalisation features are built on top of the inventory data model, not as separate integrations.

  4. 04

    Launch and support

    Go-live is timed to avoid peak trading periods where possible. We provide onboarding for trading, merchandising, and operations teams. Post-launch support covers adjustments from real-world trading, with handover to your team or an ongoing support arrangement.

Frequently asked questions

Shopify works well for fashion brands with a straightforward catalogue and standard checkout requirements. Custom software becomes the right choice when the platform's constraints are creating real operational problems. Common triggers: size run inventory that Shopify's variant limits can't model accurately; personalisation or loyalty requirements that need a stack of apps that conflict with each other; a wholesale channel that needs customer-specific pricing and ordering rules; or a rental or subscription model that Shopify's checkout can't support cleanly. If a Shopify configuration would solve the problem, we'll say so. Custom development carries ongoing maintenance cost that a platform absorbs for you. But when the platform is the constraint rather than the solution, a custom build pays for itself.

Size run complexity is one of the main reasons fashion businesses outgrow generic platforms. We model size runs at the SKU level, with stock tracked per size per warehouse location. A sold-out size is marked as out of stock immediately when the last unit sells, without waiting for a manual inventory update. Variant combinations (size, colour, length, fit) are modelled as a matrix so buyers see exactly what's available in their size before selecting colour. Size recommendation logic is built on top of this: the system matches a customer's stated measurements or purchase history against the brand's size chart and returns a recommendation with a confidence level. This prevents the size recommendation from suggesting a size that's already sold out.

The decision depends on ownership of the inventory and the commercial relationship with brands. A DTC platform makes sense when you own the stock and control the fulfilment: you're a retailer buying wholesale and selling on your own platform. A marketplace makes sense when brands manage their own inventory and fulfilment and you earn a commission or fee on sales made through your platform. The operational difference is significant: a marketplace requires per-vendor inventory management, split payments, per-vendor returns handling, and vendor accountability tools. A DTC platform is simpler to operate but requires capital tied up in stock. Some businesses start as DTC and move to a marketplace model as they scale. We build for both and can help you think through which model fits your current operation.

Start with the problem that's costing you the most right now. For most fashion brands, that's either inventory accuracy (sizes showing as available when they're sold out, or sold out when stock is sitting in the warehouse) or the returns process, which is slow, manual, and disconnected from the buying flow. An inventory management tool or a returns management integration with automated restock and refund logic is a focused build with a clear return on investment. Once that's running, you have accurate data to build personalisation and loyalty on top of. Trying to build everything at once usually results in a project that's too large to scope accurately and too complex to deliver in a manageable timeline.

Fashion software by product

What clients say

What our clients say

Three-year average engagement. Founders and operators describing the work in their own words. No marketing varnish.

Dr. J. Ayo Akinyele
Dr. J. Ayo Akinyele
USA flagUSA
President, Co-Founder

I was pleased with RaftLabs team quality, consistency and execution.

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Case studies

Related services

  • Business Process Automation, Automate inventory replenishment, supplier purchase orders, returns processing, and seasonal merchandising workflows
  • AI Agent Development, Styling recommendations, trend forecasting, and demand prediction for fashion platforms
  • Loyalty Programme Development, Custom loyalty mechanics for fashion brands covering online and in-store purchases, referrals, and VIP tier rewards
  • Custom Software Development, Custom DTC storefronts, rental platforms, and marketplace systems built for your fashion business model

Talk to us about your fashion industry project.

Tell us your platform, your business model, and where the current setup breaks down. We'll scope what to build and give you a fixed cost.

  • Scope and cost agreed before work starts. No surprises. No obligation.
  • Working prototype within 3 weeks of kickoff.
  • Pay by milestone. You see progress before each invoice.
  • 60-day post-launch warranty. Bug fixes, UI tweaks, and deployment support. No retainer.
  • All conversations are NDA-protected.