Graphene and its derivatives are very versatile materials. As a result of their electrical, mechanical and optical properties they have, in the past 10 years, been proposed for use in a wide range of applications ranging from flexible electronics to DNA sequencing. They offer the promise to significantly improve existing products and to enable the design of materials and devices with novel functionalities. We asked seven experts in their fields to share their views on the potential and challenges in the realization of graphene-based products in a range of technologies. Development of graphene materials and devices is more mature in some areas, such as flexible electronics and conductive inks, but is at a more conceptual stage in others, such as biomedical and aerospace technologies. Several challenges towards commercialization remain that are application-dependent. Furthermore, a common problem for the introduction of graphene in industrial applications is the lack of methods for the large-scale production of graphene materials, in particular of electronic-quality layers.