Moderne›Moderne› offers OpenRewrite

OpenRewrite models source code as a Lossless Semantic Tree that preserves formatting, comments, and type bindings, then applies rules-based recipes — written in YAML, Refaster templates, or Java — that rewrite the tree so the same recipe produces the same output on every run. Maven and Gradle plugins run recipes one repository at a time; the project originally focused on Java and has added support for other languages including Kotlin, Groovy, Python, C#, JavaScript, TypeScript, Go, and Scala.

Jonathan Schneider created OpenRewrite at Netflix, and Moderne now manages the project as its primary maintainer. Licensing in 2026 is tiered: an Apache 2.0-licensed core with foundational Java recipes, source-available recipes, and proprietary recipes and languages for customers, while coordinated multi-repository change with pull-request orchestration and audit trails is the enterprise route via the commercial Moderne platform.