Open-source multi-vendor marketplace platform for B2B & B2C. Built on top of MedusaJS. Create your own custom marketplace. 🛍️

Mercur
Open Source Marketplace Platform

Mercur | Docs

Mercur is the first truly limitless open source marketplace platform that combines the simplicity of SaaS with the freedom of open source. Built on MedusaJS, it empowers businesses to create custom marketplaces without choosing between ownership and ease of use.

Mercur is a platform to start, customize, manage, and scale your marketplace for every business model with a modern technology stack.

After months of development, testing, and close collaboration with early adopters, we’re excited to announce the official release of Mercur 1.0 - the first truly limitless marketplace platform. Version 1.0 is fully open source and ready to be self-hosted, giving you full control over infrastructure, customizations, and data.

With this version, Mercur is production-ready for B2C marketplaces. The first complete version includes a vendor system, admin panel, and a fully built B2C Storefront. Read more in official release announcement

• Full Ownership: Unlike SaaS platforms, you own your marketplace with no transaction fees or vendor lock-in
• Modern Foundation: Built on MedusaJS, offering a modern tech stack that developers love
• Beautiful by Default: Create stunning storefronts without sacrificing customization

• Custom B2B Marketplace: Build enterprise-grade platforms with specialized workflows
• Custom B2C Marketplace: Create engaging consumer marketplaces with modern UX
• eCommerce Extension: Transform your store into a marketplace (coming soon)

Storefronts for Marketplace
Customizable storefronts designed for B2B and B2C with all elements including browsing and buying products across multiple vendors at once.

Discover B2C Storefront Repository - 🛍️ Check demo

Admin Panel
Control over whole marketplace: setting product categories, vendors, commissions and rules

Vendor Panel
A powerful dashboard giving sellers complete control over their products, orders, and store management in one intuitive interface.

Discover Vendor Panel - Contact us to get demo

Integrations
Built-in integration with Stripe for payments and Resend for communication needs. More integrations coming soon.

# Clone the repository
git clone https://github.com/mercurjs/mercur.git

# Change directory
cd mercur

# Install dependencies
yarn install

# Build packages
yarn build

# Go to backend folder
cd apps/backend

# Clone .env.template
cp .env.template .env

# In the .env file replace user, password, address and port parameters in the DATABASE_URL variable with your values
DATABASE_URL=postgres://[user]:[password]@[address]:[port]/$DB_NAME
# For example:
DATABASE_URL=postgres://postgres:postgres@localhost:5432/$DB_NAME

# Setup database and run migrations
yarn medusa db:create && yarn medusa db:migrate && yarn run seed

# Create admin user
npx medusa user --email <email> --password <password>

# Go to root folder
cd ../..

# Start Mercur
yarn dev

• Node.js v20+
• PostgreSQL
• Git CLI

• Mercur Website
• Mercur Docs

• Medusa Website
• Medusa Docs