Civil society plays a major role in implanting a knowledge-based society that is in keeping with the 2015 United Nations’ sustainable development goals. Civic engagement with public institutions represents a guarantee of democracy and openness that governments must respect. The objective of this project is to develop new smart tools aimed at processing the opinions of citizens and extracting the required knowledge in order to convey it to decision-makers. Toward this end, the research team will conduct a literature review on existing citizen-participation tools. The literature will serve to highlight the advantages and limitations of these types of tools for the purpose of identifying any additional tools that should be developed in order to extract knowledge from citizens’ opinions.