In this paper, we develop an open data platform on multimedia devices to act as marketplace of data for information
seekers and data providers. We explore the important aspects of Data-as-a-Service (DaaS) service in the cloud with a
mobile access point. The basis of the DaaS service is to act as a marketplace for information, utilizing new technologies
and recent new scalable polyglot architectures based on NoSql databases. Whereas Open-Data platforms are beginning to
be widely accepted, its mobile use is not. We compare similar products, their approach and a possible mobile usage. We
discuss several approaches to address the mobile access as a native app, html5 and a mobile first approach together with
the several frontend presentation techniques. Big data visualization itself is in the early days and we explore some
possibilities to get big data / open data accessed by mobile users.