Information platform
Eco-Portal
An Information Gateway Empowering the Movement for Environmental Sustainability
>> http://www.environmentalsustainability.info/

Sonnenseite.com
Collection of links from Franz Alt concerning renewable energies and connected areas.
>> http://www.sonnenseite.com/fp/archiv/Akt-Links/A.php

European DataBank Sustainable Development
Database for sustainability.
>> http://www.sd-eudb.net/index-gb.htm