The unprecedented changing climate in the anthropogenic age will need novel solutions and political will and engagement across wide stakeholders. Nature-based solution as an alternative to mitigate climate extremes and disasters is growingly gaining momentum in recent times. Similarly, crowdsourcing and citizen science as a tool to implement climate action as well as engage wider stakeholders is a novel alternative to traditional data generation and project implementation. In this contribution, we first introduce the Geospatial Information Knowledge Platform (GeoIKP) for Nature-Based Solutions, developed as a part of the Horizon 2020 project Operandum. The platform accommodates various user profiles, such as policymaker, scientist, media, citizen, etc., and delivers content as per their profile need. Further, the crowdsourcing approach along with interactive maps and database, engages the wider audience in the nature-based climate action, as well as increases the awareness of the general public on nature-based solutions for climate adaption. We follow up with recent progress in the portal, case studies of its usage, and gap analysis for the Asia–Pacific region.