Mailchimp Open Commerce (formerly Reaction Commerce)
Control your commerce future
An open source, API-first, modular commerce stack made for technical, growth-minded retailers.View Quick Start
Flexibility at scale
Use our essential commerce capabilities alongside or instead of your existing tech stack.
Build your ideal platform
Implement only the services that fit your business and the future you’re building.
Suit your needs without limits
Customize any part of the platform with new technologies, channels, or business models—at your own pace.
Implement Open Commerce
Use our open source platform to build the e-commerce solution that fits your business, on your own servers or in the cloud.
Customize with plugins
Our service-based architecture is built to deliver flexibility and freedom at scale. Add plugins developed by the community or create your own.
Operate a shop
The admin dashboard puts data at your fingertips, letting shop owners and developers keep product, inventory, and customer data up to date.
Open Commerce gave us a framework that was easy to integrate with our existing API…the modular architecture gives us all the freedom we need for development.