wallee is a cloud-based payment platform for online, in-store (point of sale) and unattended payments, managed through one portal and one API. The offer includes card terminals and a SoftPOS solution, which the company says is developed in-house in Winterthur. Plugins and SDKs for integration are available, and some are published on GitHub. The operating company is Wallee Group AG.
Wallee Group AG is a Swiss company, and the website names Winterthur as the place where its SoftPOS solution is developed. The public pages do not name the shareholders or state where customer data is hosted. The terminals are described as PCI certified. The website does not describe the platform as open source, although some components are on GitHub. For a European organisation, wallee is a provider under Swiss jurisdiction outside the EU, so hosting and processing terms should be confirmed in the contract.