Moderne

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Moderne is the Miami based commercial company behind OpenRewrite, the open source automated refactoring ecosystem built around the Lossless Semantic Tree, a type aware, high fidelity model of source code. The company raised a thirty million dollar Series B in February 2025 led by Acrew Capital with participation including Morgan Stanley and Intel Capital, bringing total funding to about fifty million dollars across three rounds, followed by a corporate round in September 2025 that Crunchbase associates with Amex Ventures. Where OpenRewrite migrates and refactors one repository at a time with deterministic recipes, Moderne batch builds LSTs once, serializes them, and runs the same recipes across hundreds or thousands of repositories simultaneously, operating on hundreds of millions of lines of code with queries and transformations executing in seconds. The platform automates framework migrations, remediates security vulnerabilities across direct and transitive dependencies, performs organization wide type aware code search, and standardizes code quality, with every transformation reviewable and traceable for compliance. The agentic layer is deliberate: Moddy, a multi repo AI agent, takes natural language requests like help me upgrade to Spring Boot and finds and executes the right recipes; Prethink recipes generate pre resolved structured context about service endpoints, dependencies, and test coverage so coding agents stop inferring architecture from raw code; Trigrep provides type aware search; and the Moderne MCP server exposes deterministic recipes as tool calls any coding agent can invoke. OpenRewrite is natively Java, Kotlin, and Groovy, with Moderne extending coverage to JavaScript, TypeScript, C#, Python, Go, Ruby, and COBOL under a commercial license, and the DX product delivers an air gapped, on premises CLI and IDE solution with recipes and reporting. Moderne fits platform engineering teams at large organizations, especially banks and fintechs, modernizing massive multi repo estates, and teams wiring coding agents that need deterministic execution rather than probabilistic edits. The free public service covers tens of thousands of open source projects.