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Plugins & Extensions

Add the features your store needs — properly built.

When no off-the-shelf add-on does exactly what you need, we build it. Custom plugins and extensions for WooCommerce, Magento, OpenCart, PrestaShop and Shopify — from multi-vendor and B2B commerce to payments, shipping and bespoke features.

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What we build

Plugins & extensions we develop

Multi-vendor Marketplace Extension

Turn a single store into a marketplace — vendors, commissions, payouts.

B2B Commerce Plugin

Customer-group pricing, quotes, quick-order and credit terms.

Payment & Checkout

Custom gateways, split payments and tailored checkout flows.

Shipping & Fulfilment

Carrier rules, rates, labels and warehouse logic.

Third-party Integrations

Connect ERPs, CRMs and APIs from inside the store.

Bespoke Features

Any feature your business needs that no add-on covers.

Published & proven

Our work is live on the official marketplaces

We don't only build one-off plugins — we publish and maintain commercial apps on the platforms' own app stores, used by real merchants.

SHOPIFY APP STORE

Apps on Shopify

GSP Order Tracker, Variant/Options Image Gallery, Live Price Change on variants and more.

View on Shopify →
ODOO APPS

18 Odoo apps

B2B Marketplace, Multivendor Marketplace, Magento/OpenCart/PrestaShop/Shopify/WooCommerce ↔ Odoo connectors, Product Auctions.

View on Odoo →
OPENCART MARKETPLACE

Dozens of OpenCart extensions

POS, multivendor tools, payment gateways, an OpenCart 3→4 upgrade service and many reviewed extensions.

View on OpenCart →
Platforms

Built for your platform's standards

We follow each platform's architecture and coding standards, so extensions are upgrade-safe and maintainable — not fragile hacks.

  • WooCommerce & WordPressHooks and standards-compliant plugins.
  • Magento (Adobe Commerce)Modules that respect Magento's architecture.
  • OpenCart & PrestaShopExtensions and modules, upgrade-safe.
  • ShopifyApps and custom checkout/functionality.
Why GSP Technologies

Extensions you can rely on

Upgrade-safe

Built to each platform's standards so updates don't break you.

Clean, owned code

You own readable, documented code — not a black box.

Performance-minded

Written to keep your store fast under real load.

Maintained

Ongoing support and updates as platforms evolve.

FAQ

Common questions

Will a custom plugin survive platform updates?

Yes — we build to each platform's extension standards (hooks, modules, APIs) rather than editing core, so your plugin stays compatible through updates.

Can you extend an existing third-party plugin?

Often, yes. We can add to or integrate with existing plugins where their licence and architecture allow, or rebuild the piece you need cleanly.

Do I own the plugin?

Yes. You receive documented, owned source code and can maintain or extend it with us or your own team.

Can one extension work across platforms?

Each platform needs its own implementation, but we can deliver the same capability across WooCommerce, Magento, OpenCart, PrestaShop or Shopify.

Need a feature your platform doesn't have?

Tell us the platform and what you want it to do. We'll scope a plugin or extension that fits.

Get a quote