thirty bees is an open-source e-commerce platform for online shops. It started as a fork of PrestaShop 1.6.1.11 and remains compatible with almost all PrestaShop 1.6 modules. The software is written in PHP and offers a responsive design, one-step or five-step checkout, multiple languages and currencies, SEO tools, PDF invoices, product filtering and management of several shops from one admin panel. It can be extended through modules. You download and install it on your own server, or launch it through a hosting partner such as Cloudways.
The project is backed by Thirty Bees B.V. in Middelburg, the Netherlands; the community collaborates through a forum and GitHub. Because you host thirty bees yourself, you choose the country and provider where your data is stored and can stay within the EU. The sources reviewed do not name the licence, so check it in the repository. Using an external hosting partner brings that partner's jurisdiction into play.