Open-source Faire alternatives

Bagisto is an open-source eCommerce and multi-vendor marketplace platform built on Laravel and Vue.js. It provides a flexible, customizable foundation for launching online stores, B2B commerce portals and marketplaces, and aims to cut the time and cost of development while leaving room to customize and scale.

The project's description claims support for catalogs of ten million or more SKUs, and its topics mention headless commerce, multi-tenancy and use as a Laravel package or framework. It is written in PHP and suits agencies and in-house teams that already know Laravel. The repository links to documentation, an installation guide, a Docker installation path and community forums, and the 2.x line was in beta at the time of writing.

Bagisto is MIT licensed, so you can host it on your own servers and modify it freely. It is a fit for merchants who prefer an open codebase over a hosted store builder, and for developers building custom commerce experiences who want Laravel conventions rather than a proprietary platform.

Spree is an open-source commerce platform written in Ruby. It bundles a full REST API, TypeScript SDKs, an admin dashboard written in React and a Next.js storefront ready for production, and the BSD 3-Clause license means you keep ownership of your code, data and infrastructure. The project's pitch is self-hosting with no platform fees and no vendor lock-in.

It is designed as a set of commerce primitives that adapt to different business models. For multi-vendor marketplaces it offers seller onboarding with configurable checklists, orders split by seller, commission rules, a payout ledger that uses Stripe Connect, and a dedicated seller panel. For B2B and wholesale it covers tiered volume pricing in price lists, customer groups, company accounts that have several locations, contacts, tax exemptions, and separate catalogs per segment. It also supports headless direct-to-consumer, cross-border and omnichannel selling alongside existing ERP, PIM and payment systems.

Spree has been developed since 2008, with documentation, an API reference, a roadmap and a Discord community. It suits engineering teams that want an owned, customizable commerce backend rather than a hosted store builder.

Mercur is an open-source, headless platform for building multi-vendor marketplaces and is presented as an alternative to Mirakl. It adds vendor onboarding, multi-vendor catalogs, offers, commissions, and automated payouts on top of a commerce core. The topics point to Medusa as that core. It is written in TypeScript and released under the MIT license.

The platform supports B2C, B2B, and hybrid marketplaces and includes a storefront, a vendor panel, an admin console, and integrations. The README stresses ownership: you self-host on your own infrastructure with full source access, and there is no percentage of gross merchandise value, no per-transaction fee, and no vendor lock-in.

Documentation, a live demo, and a Discord community are available. Mercur suits teams launching a marketplace who want to avoid both a revenue-sharing SaaS platform and a from-scratch build, and who have the engineering capacity to operate and customize the system.

GrandNode is an open-source e-commerce platform built with ASP.NET Core and MongoDB. Its use of a NoSQL database is the main design choice, aimed at fast page rendering and the ability to handle traffic spikes, and it targets businesses that want a customizable shop with room to grow.

The platform supports several business models, including B2B, B2C, multi-store, multi-vendor, multi-tenant, multi-language and multi-currency setups, so one installation can run several storefronts. It is designed to integrate with existing third-party software, and the project provides themes, plugins and integrations, a forum and a demo store. Premium support is offered separately by the maintainers.

GrandNode is written in C# on .NET and released under the GPL-3.0 licence. You can install it from the documented steps, build from source or run it locally, and host it on your own servers. It suits development teams and merchants in the .NET ecosystem who prefer MongoDB over a relational database for their store.

Virto Commerce is an open-source platform for building extensible e-commerce applications. It targets complex digital commerce for B2B, B2C and B2B2C businesses, marketplaces and derived SaaS commerce platforms, and its architecture is based on microservices, an API-first approach, cloud-native delivery and headless operation.

The platform is assembled from ready-made modules, with every application made of headless microservices that can also be reused in other applications. Business logic is available through REST or GraphQL APIs, and the API model, persistence model and business logic can be extended. The README describes cloud-native delivery in line with a SaaS model, with on-demand use, scalability and reliability across data centers.

The code base is written in C# with an Angular admin interface and is associated with Microsoft Azure. The repository lists its licence as other, so check the terms before use. The project positions itself as letting development teams concentrate on business features rather than architecture. It suits enterprise teams and agencies that need a configurable, headless B2B commerce backend on the Microsoft stack.