OpenSecrets is a non-profit organization that tracks money in U.S. politics and its impact on elections and public policy. It provides comprehensive data on campaign contributions, lobbying expenditures, and the financial interests of politicians, helping to promote transparency in the political process. The organization is operated by the Center for Responsive Politics and offers a user-friendly website where users can access detailed information about political donations, spending trends, and the influence of special interest groups. This resource is valuable for researchers, journalists, and citizens interested in understanding the role of money in politics.