Helium Foundation is a non-profit organization focused on decentralizing wireless networks through the use of the Helium Blockchain. Their primary activities include ecosystem development, network governance, and public education. They offer an open, permissionless wireless network for municipal, commercial, and industrial connectivity, and provide funding for open source contributions to build the network. The foundation also runs a grants program to support the growth of the Helium ecosystem and offers resources for understanding and leveraging the network.