Many sellers, many products, one platform, Laravel back office with vendor onboarding, commission splits and payouts, plus a Flutter shopping app.
A working marketplace, not a shop with a vendor column bolted on.
Sellers register, are approved, and get their own dashboard scoped to their own products and orders. An order that spans three vendors splits into three fulfilments and three commission lines, which is where most marketplace tutorials fall over. Payouts are tracked per seller with a running balance. The customer side is a Flutter app: browse, search, cart, checkout, order history.
Unzip, dependencies, database, .env, first run, putting it on a real server, and a troubleshooting list for the things that actually go wrong. It is in your library beside the download, the moment you own it.
One developer, unlimited client projects. Resale of the source itself is not permitted.