Best Advocacy Software for Windows of 2026

Plus Three serves as a comprehensive online platform designed for fundraising, membership management, event coordination, and advocacy, tailored specifically for non-profits, public affairs, governmental entities, and political organizations. With just a click, Plus Three's innovative tools simplify the process of connecting and engaging with constituents across digital channels. Leading non-profit organizations, advocacy coalitions, and political campaigns leverage Plus Three to expand their support networks through direct advocacy efforts while enhancing their online fundraising capabilities. Managing more than 12 million direct relationships with constituents, Plus Three has successfully facilitated the raising of over $500 million in online contributions for its clients. Our technology encompasses a wide range of functions including donor management, email outreach, event planning, advocacy initiatives, and fundraising strategies, making it an invaluable resource for organizations striving to make a difference. Additionally, our platform continues to evolve, ensuring that clients have access to the most effective tools for their missions.