A major challenge for the global nanotechnology sector is the development of safe and functional engineered nanomaterials (ENMs) and nano-enabled products (NEPs). In this context, the application of the Safe-by-Design (SbD) concept has been adopted recently by the nanosafety community as a means to dampen human health and environmental risks, applying preventive safety measures during the design stage of a facility, process, material or product. However and despite its importance, SbD prescriptions are still in their infancy, and are hampered among other things by the lack of comprehensive data about the performance, hazard and release potential of the great variety of NEPs in use. SbD4Nano addresses that problem creating a comprehensive new e-infrastructure to foster dialogue and collaboration between all actors in the supply chain for a knowledge-driven definition of SbD setups that optimize hazard, technical performance and economic costs. Our project developes a validated rapid hazard profiling module, coupled to a new exposure-driven modelling framework to reduce toxicity. This safe-born material also undergoes a cost-benefit analysis algorithm to find the best compromise between safety and a industrially convenient technical performance. Finally, a new software interface where product information can be exchanged between the supply chain participants is the tool that wraps up, finishing the collaborative spirit of SbD4Nano between regulators, researchers and industry. Coherently with its goals, our SbD4Nano project is international and open-scienced in essence, with the clear aim of impacting the EU policies as well as directly and clearly benefiting the citizen.