It’s really hard for me to understand why more non-profit organizations are not using the Salesforce.com Foundation offering. (http://foundation.force.com/home)

They have over 9,000+ non-profit organizations using this enterprise grade platform.

Non-Profit Organizations should start here. (http://www.salesforcefoundation.org/products/nonprofit_solution/fundraising)

The Salesforce.com Foundation’s 1/1/1 program provides an opportunity for NPOs, their donors, and socially contributing companies to both extend and leverage a world class enterprise platform for the benefit of society.