Build a standalone marketplace on an engine you own
The capabilities every marketplace needs – already built into the platform. You customize the last 20%.
There are two hard ways to start a marketplace. Mercur is the third – the easy one.
Rent a SaaS marketplace
Pay a cut of every sale, forever – and still run a separate commerce platform underneath.
Build it all yourself
Two years of developing settlement, payouts, BuyBox, and compliance before you sell a thing.
Run Mercur
One engine that is the commerce and the marketplace – yours to own, on your infrastructure.
The marketplace and the store are the same system
Most platforms are a third-party layer on top of a separate commerce platform: two systems to buy, integrate, and sync. Mercur is one engine, where your extensions live in your own repo.
Everything a new marketplace needs on day one
A marketplace needs all of this from the first transaction. Mercur core provides it as one system.
Storefront & Catalog
A storefront and a multi-vendor catalog.
Vendors & Offers
Vendor onboarding and competing offers.
Split carts & Orders
One basket, per-vendor orders behind it.
Payouts & Settlement
Payouts, commissions and a ledger that balances.
Returns & Disputes
Per-line returns and disputes on your policy.
API-first & Headless
Bring any frontend; everything is on the API.
What does building with Mercur get you?
Start on open source. Scale on enterprise.
Open source · MIT
Mercur Open Source
The complete standalone marketplace engine – MIT-licensed and public. Test it, build on it, or launch a simpler marketplace yourself.
- MIT-licensed and public
- Complete standalone marketplace engine
- See the code, architecture, and quality
Enterprise
Mercur Enterprise
Everything in open source, plus the production layer for a business that's actually operating – payments, compliance, trust, integrations, and support. Full source for licensees.
- Financial control & settlement
- Compliance & data residency
- Trust, security & audit
- Integrations to your stack
- Enterprise support & SLA
Explore live marketplace demo
Click through an electronics marketplace built on Mercur Enterprise. Walk it end-to-end, and discover every part of a platform on the real product.
Let's build your marketplace
Start with discovery, agree the architecture, ship an MVP, and roll out with the team that built Mercur.