Miami web design firm WebFL.US offers a W3C-validated online order and payment solution for selling products and services in English or Spanish on any smartphone or tablet computer via the PayPal Mobile Express Checkout API.

Expert-rated responsive web designer and mobile app developer Bruce Arnold today announced the availability of mCartXP™, a multi-device HTML5 mobile web app developed jointly by his firm WebFL.US and their white label web development counterpart WLWeb.US – both of which are staffed by American web professionals actually based in South Florida and n..

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