International Institute for Applied Systems Analysis
"The International Institute for Applied Systems Analysis (IIASA) is an international research organization. It conducts inter-disciplinary scientific studies on environmental, economic, technological, and social issues in the context of human dimensions of global change. IIASA is located in Austria near Vienna and is sponsored by its National Member Organizations in Africa, Asia, Europe, and North America.
IIASA's research scholars study environmental, economic, technological, and social developments. The research areas covered link a variety of natural and social science disciplines. The work is based on original state-of-the-art methodology and analytical approaches. The methods and tools generated are useful to both decision makers and the scientific community. " 
- Greenhouse Gas Initiative interactive GHG scenario database
- Representative Concentration Pathways database
- IIASA Logic Substitution Model II estimates parameters of technological growth and substitution processes