What are Social Impact Support Organizations?
We’ve coined the term Social Impact Support Organizations to describe those that provide the needed infrastructure for accelerating social impact. Broader than philanthropy support organizations (PSOs), SISOs include charitable, development, and human capital catalysts; donor-serving organizations; field-building organizations; social investment accelerators; leadership trainers; philanthropic media platforms, and more. Examples of SISOs include GivingTuesday, VolunteerMatch, Council on Foundations, National Council of Nonprofits, TechSoup, and Alliance Magazine.