The Raisers Edge - Cloud-based fundraising & donor management software solution built specifically for nonprofits & the entire social good community - get more info here.
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Naviance - Naviance is a college and career preparedness software for students.
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.
Talisma - CRM suite with marketing and KB (Knowledge Base) tools
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.