This talk discusses a project funded by the National Science Foundation for engaging diverse communities to conceptualize a national Geospatial Software Institute (GSI) in the United States. The mission of the GSI should be to transform geospatial software, data science, and cyberinfrastructure across many fields to revolutionize diverse discovery and innovation by enhancing computational transparency and reproducibility. GSI is well-positioned to nurture a high-performance, open, and sustainable geospatial software ecosystem across academia, government, and industry.