Social innovation as a process is about multiple stakeholders working together on joint, economically and socially sustainable solutions for wicked societal problems. Social innovation both co-creates value for individual stakeholders involved, and contributes to the common good. It has been an important theme in the the Dutch city of Tilburg and the surrounding region of Midden-Brabant for years. A successful regional social innovation ecosystem exists. Knowledge sharing about the innovations remains a bottleneck, however. Two initiatives to increase regional social innovation knowledge sharing capacity are presented: the social innovation storytelling architecture and the Tilburg public library prototype KnowledgeCloud for catalyzing knowledge sharing across regional themes of interest.