This chapter presents a comprehensive analysis of citizen science initiatives developed by the University of Zaragoza for the collaborative cataloguing of cultural heritage through Geographic Information Systems (GIS). These digital tools—Mural Hunter, CatPat, and RomanSites—enable users to geolocate, document, and reflect on tangible and intangible heritage elements. Designed within a framework of educommunication and the transition from ICTs to RICTs, these applications foster the formation of heritage cybercommunities and promote active, participatory learning. The chapter also explores the educational potential of these tools in formal and non-formal settings, offering didactic proposals aimed at engaging students in heritage preservation, critical analysis, and digital competence development. Through co-creation and the mediation of digital devices, this work demonstrates how GIS-based platforms can democratize heritage access and encourage community-based heritage stewardship.