Charity.com: Has charity news and information for donating online.
Charitychoices.com: Profiles more than 300 national and local charities that meet standards for inclusion in the Combined Federal Campaign. Online donating offered.
Charitygift.com: Allows donations in honor of friends, families or causes. Also offers a gift registry for contributions.
Networkforgood.org: Has information on thousands of charities nationally. In addition, lets people set up a "charity wish list" and determine how donations will affect their taxes.
OPM.gov/cfc: Gives information on charities included in the Combined Federal Campaign.
Pointsoflight.org: Offers information on volunteering and access to thousands of volunteer centers nationwide that match people with charities.
TouchDC.org: Has information about 25,700 charities in the Washington area. Volunteers can sign up.
Unitedwaynca.org: Offers information on local nonprofits and online giving.
Webcharity.com: Allows donations of new and used items, which are then sold online to benefit charity.
To investigate a charity before writing a check:
Charitynavigator.org: Evaluates finances of more than 1,700 large charities by examining their tax filings.
Give.org: Has in-depth reports on hundreds of charitable organizations that solicit nationally. Also has tips on how to donate wisely.
Guidestar.org: Has financial records for more than 850,000 nonprofits.