Change.org - We live in an amazing time, when the opportunity to make a difference is greater than ever before.
iPetitions - Free online petitions
AVAAZ.ORG - Check out this amazing movement to create a better world -- www.avaaz.org ...
Shoaly - Giving power to your opinion as you help build democracy for the digital era.
Action Network - Action Network offers a toolset for on-line movement building. It helps to organise people online and offline by offering tools like email campaigns, petitions, fundraisers and event organisation.
Causes - Causes is platform for activism.