Offers philanthropies and related institutions access to customized searches of a comprehensive database on nonprofit organizations. Subscribers to the web-based service can: (1) research the grant activity of both grantmakers and grantees and locate potential funding opportunities; (2) get access to detailed reports of a not-for-profit organization’s performance over time for benchmarking purposes; (3) research the salary and benefits packages of thousands of public charities, by job categories, program areas, and geographic locations; (4) verify 501(c)(3) status for instant due diligence; and (5) search an online marketplace to find requests for donations, in-kind gifts, or volunteers, as well as job postings, from charitable organizations. The web site also allows nonprofit organizations to update information contained in the GuideStar reports, provides due diligence and research tools for grantmakers as well as news and links of interest to foundations, offers specific guidance to help donors select charities that meet their criteria, provides access to GuideStar print publications, and contains information about subscription categories and rates.