GoLocalBot. The project is closed - Platform for volunteers, NGOs, activists and crowdmapping.
Inside.com - Real news, curated by real humans
GivingWay - Travel the world, do some good.
Email Tuna - Explore newsletters without subscribing
Volgistics - Volgistics is a volunteer management software solution, that helps to manage volunteers through the entire volunteer cycle.
Squarespace Email Campaigns - Email, but pretty.