Throughout history, social change has been possible only through the contributions and dedication of many people and organizations connected in tight and loose groups. Recognizing that operating within the confines of a single organization is often insufficient to create widespread, lasting change, grantmakers are adopting a different mindset that helps them see and do their work as part of larger, more diverse and powerful efforts. However, this mindset is different from how some foundations currently operate. It means valuing connectedness, shared ownership and openness. This piece introduces how we might shift from a traditional mindset to a more collaborative mindset, to think and act beyond the boundaries of our foundations to make progress on complex social problems.