This grant builds on the success of the University of California, Santa Cruz OSPO to support open source software development across six University of California campuses--Santa Cruz, Berkeley, Davis, Los Angeles, Santa Barbara, and San Diego. Th network will engage UC faculty and student work on open source software, pooling resources to avoid duplication of efforts across the state, while at the same time leveraging the unique local strengths of each partner campus. Each of the participating UC campuses will receive some base funding to tap local capacity, build relationships and engagement, and launch an Open Source Project Office over the two-year grant period, while in addition Santa Cruz will support network-level coordination and a system-wide Open Source Leadership Group (OLG). Grant funds will also support the development of a platform for discovering and tracking open source software across the UC system, a set of practical tools to assess the sustainability of open source projects, and a pilot “containerization as a service” capacity that will make open source software more accessible and usable across the UC system.