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Make A Difference
At GuideStar we believe it's important to give with our heads and our hearts. That's why we make information about nonprofits available online—so we all can research charities, then donate or volunteer with confidence that our resources will be used efficiently and effectively. Still, donors often ask us, "How can I choose between charities?" That's why we're so excited about TakeAction@GuideStar.
We've joined forces with GiveWell, Philanthropedia, and GreatNonprofits to provide expert opinions and user reviews of nonprofits working in various social causes.
- See expert analyses of charities working in your favorites causes
- Donate to cause-based mutual funds
- Share your expertise—write nonprofit reviews
Advice from the Experts
Organizations listed under TakeAction@GuideStar are recommended by recognized experts associated with the following organizations:
GiveWell is an independent nonprofit charity evaluator whose mission is to find outstanding charities and publish the full details of their analysis to help donors decide where to give. Unlike evaluators that look solely at financials, GiveWell focuses on how well programs actually work—i.e., their effects on the people they serve.
Learn more >
Philanthropedia surveys large numbers of social cause experts in order to identify which nonprofits are having the most impact. By collecting the vast knowledge of foundation professionals, researchers, nonprofit senior staff and others, donors can now access previously private information about nonprofit effectiveness. They combine the recommendations into an Expert Fund so donors can donate to an entire social cause with just one transaction—a more powerful way to make a difference.
Learn more > Discover a Great New Way to Research Charities and Share Your Experience
GuideStar has joined forces with GreatNonprofits.org to help you get firsthand insights about the charities you’re thinking of supporting.

GreatNonprofits is a Web site where everyday people review nonprofits. Now, whenever someone posts a review on GreatNonprofits, you can also read it here on GuideStar—and vice versa.
Want to share your experiences with a nonprofit? Care to know what people are saying about the nonprofits you support?
Search for Nonprofits and Read or Write Reviews > Donate On-line
You can contribute to charities directly from our Web site—just click the
Donate Now button beside a charity's name. The button appears in GuideStar search results and nonprofit report pages.
Search for a Charity and Donate Now >