This paper presents two novel web-based applications for disseminating climate change adaptation related information. (i) The MEDIATION Adaptation Platform, one of the core outputs of the European FP7 research project MEDIATION (Methodology for Effective Decision-making on Impacts and AdaptaTION), offers a set of decision trees that can be browsed graphically to navigate over adaptation challenges and available types of methods for addressing them. This framework is interlinked both with a Toolbox and a set of case study descriptions. (ii) ci:grasp-2, the successor of the BMU-funded Climate Impacts: Global and Regional Adaptation Support Platform (ci:grasp), provides access to a growing pool of global and regional information on climate stimuli and impacts, as well as on adaptation projects. The paper identifies central user tasks for both applications and presents interaction metaphors that have been chosen to support users in fulfilling these tasks.