Hypothesis is designed to be an interactive platform between humanities and social sciences (SSH) researchers and the society at large. Developing the practices of academic blogging, the hypotheses.org platform already offers to SSH researchers the ability to build an open conversation with socio-economic actors, more particularly regarding the societal challenges. Currently, hypotheses.org allows for communication practices in support of a wide range of interactions with the society, from science popularisation (https://sms.hypotheses.org/) to intensively collaborative projects (https://places.hypotheses.org).