eComPRO vs Sylius

eComPRO has no write-up on Specifiction yet; its figures are above.

Sylius is an open-source headless eCommerce platform for mid-market and enterprise brands building custom commerce solutions. Its framework supports B2C and B2B use cases and provides a customizable REST API built with API Platform for headless frontends and microservice architectures. Sylius Standard is a Symfony application with Sylius core as a dependency; it can be installed with Composer or Docker and run on a standard VPS. Docker and Kubernetes are also deployment options for cloud environments. The Addons marketplace lists plugins and third-party integrations. Sylius Plus adds commercial modules such as advanced multi-store, returns management, multi-source inventory, loyalty, partial shipment and request for quotation. Standard is offered under the MIT license with community support and no response-time guarantee; Plus lists SLA-backed support with a one-day response time. Standard has no native quotation process, so customers cannot start price inquiries online. No Standard price is listed. Sylius Plus starts from €800 per year.