Abstract : This final report contains a record of activities and a description of project deliverables and results from the Software Systems Stockroom (S3) Phase 1 program, which was executed by Boeing Research & Technology (BRT community and information sharing; repositories for components, models, architectures and platforms; support for provenance and version control; and domain-specific taxonomies and ontologies to support user interface generation and rich searching capabilities. The work also includes considerable community engagement and development of candidate Phase 2 plans for S3 development and operation.