The Nonprofit Starter Pack (NPSP) is available as 5 managed packages. This is the Contacts and Organizations package.

Households

• Supports the householding model
• Extension of Contacts & Organizations
• Handles Opportunity rollups

For more information go to http://nonprofitstarterpack.org

• This code can be deployed into a Salesforce organization using Eclipse or Ant
• The master branch contain the most current release available via managed package
• The dev branch contains the development source for the next major Households release

Available here

Released under the BSD license.