Internet has formerly been used to link ideas, then people and now it is starting to connect things together. IoT constitutes a good paradigm to enable people to design and modify things, and then sharing their designs and modifications. Through the internet, things are nowadays able to exchange raw data and information thus enabling the development of a new class of interconnected smart objects. In this paper a web platform for the design, co-design and sharing of smart objects is presented. The platform represents a design environment where physical shapes, sensing and actuation features, as well as functioning logics are integrated in a user friendly framework. A platform test has been performed in the context of the Maker Faire Rome 2013 demonstrating how the developed infrastructure acts as design enabler for both makers and mainstream users.