Wiser Earth.

WiserEarth is an interactive database whose goal it is to list, categorize, and describe every non-profit and civil society organization on Earth such as climate change, poverty, the environment, peace, water, hunger, social justice, conservation, human rights, and more. Content is created by people like you from around the world. It currently includes 104,304 organizations which can be viewed by name, location, or category. You can post (or search) jobs, events, and resources; you can discuss; you can visualize the networks connecting specific categories and the various organizations.