Linux Foundation OS-Climate (OS-C) is a breakthrough initiative creating a transparently governed public utility of open data and open source tools for climate-aligned finance investing, business, and regulation. OS-C use the open collaboration approach that delivered rapid COVID vaccines, applying that to solve data gaps now blocking rapidly scalable transition of capital toward a resilient Net Zero economy. OS-C’s Asset Owner, Asset Manager, Bank, Tech, Financial Data, and “real economy’ corporate members are Airbus, Allianz, Amazon, BNP Paribas, BNY Mellon, EY, Federated Hermes, Goldman Sachs, KPMG, London Stock Exchange Group, Microsoft, the Net Zero Asset Owner Alliance (pension funds and insurance companies with $10 trillion in assets), Ortec Finance, Red Hat, and S&P Global. NGO and academic Members include CPI, Open Climate Foundation, Polytechnique, and World Benchmarking Alliance. OS-C’s Planning Team includes WWF, SASB (now Value Reporting Foundation), and Ceres. Members contribute their data scientists, modelers, and software developers to cooperative projects building the OS-C Data Commons, a federated library of libraries of corporate and factor data, plus analytics tools to derive the actionable metrics crucial for asset allocation, portfolio construction, security analysis, credit analysis, corporate engagement, strategic planning and transition investment by corporates, and financial sector supervision.