Mightier tools for mighty fundraising. Technology provider for nonprofits across the United States The Mightycause Charitable Foundation is a 501(c)(3) public charity that exists to promote and provide online charitable giving solutions that support a new era in philanthropy. The Mightycause Charitable Foundation is a 501(c)(3) public charity that exists to promote and provide online charitable giving solutions that support a new era in philanthropy. By leveraging secure and efficient technologies, the Mightycause Foundation seeks to provide robust, high-value, low-cost end-to-end solutions for donors and nonprofits to easily fundraise and engage in charitable giving activities.