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Get fast, repeatable source code refactoring

OpenRewrite (founded and managed by Moderne) is a community-driven open source project that enables developers to effectively eliminate technical debt within their repositories. It consists of an auto-refactoring engine that runs prepackaged, open source refactoring recipes for common framework migrations, security fixes, and stylistic consistency tasks.

OpenRewrite is Apache2 licensed and maintained by Moderne, the company that scales the use of OpenRewrite recipes across large codebases and multiple repositories.

Start with the quickstart guide and let OpenRewrite handle the boring parts of software development for you. We also welcome you to join our community Slack.

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  1. rewrite rewrite Public

    Automated mass refactoring of source code.

    Java 3.2k 491

  2. rewrite-testing-frameworks rewrite-testing-frameworks Public

    OpenRewrite recipes that perform common Java testing migration tasks.

    Java 89 97

  3. rewrite-maven-plugin rewrite-maven-plugin Public

    OpenRewrite's Maven plugin.

    Java 172 88

  4. rewrite-spring rewrite-spring Public

    OpenRewrite recipes for Spring projects.

    Java 366 119

  5. rewrite-gradle-plugin rewrite-gradle-plugin Public

    OpenRewrite's Gradle plugin.

    Java 79 48

  6. rewrite-docs rewrite-docs Public

    Stores the markdown documents used to generate docs.openrewrite.org

    TypeScript 49 75

Repositories

Showing 10 of 73 repositories
  • rewrite Public

    Automated mass refactoring of source code.

    openrewrite/rewrite’s past year of commit activity
    Java 3,161 Apache-2.0 491 338 (1 issue needs help) 58 Updated Dec 24, 2025
  • rewrite-java-dependencies Public

    OpenRewrite recipes for managing Java dependencies.

    openrewrite/rewrite-java-dependencies’s past year of commit activity
    Java 17 Apache-2.0 12 1 1 Updated Dec 25, 2025
  • rewrite-testing-frameworks Public

    OpenRewrite recipes that perform common Java testing migration tasks.

    openrewrite/rewrite-testing-frameworks’s past year of commit activity
    Java 89 97 57 (6 issues need help) 6 Updated Dec 24, 2025
  • rewrite-spring Public

    OpenRewrite recipes for Spring projects.

    openrewrite/rewrite-spring’s past year of commit activity
    Java 366 119 78 (7 issues need help) 2 Updated Dec 24, 2025
  • rewrite-docs Public

    Stores the markdown documents used to generate docs.openrewrite.org

    openrewrite/rewrite-docs’s past year of commit activity
    TypeScript 49 Apache-2.0 75 5 (1 issue needs help) 0 Updated Dec 24, 2025
  • rewrite-build-gradle-plugin Public

    Common build logic for building OpenRewrite and recipe jars.

    openrewrite/rewrite-build-gradle-plugin’s past year of commit activity
    Java 5 Apache-2.0 7 0 1 Updated Dec 23, 2025
  • rewrite-logging-frameworks Public

    OpenRewrite recipes for assisting with Java logging migration tasks.

    openrewrite/rewrite-logging-frameworks’s past year of commit activity
    Java 30 30 15 1 Updated Dec 23, 2025
  • rewrite-feature-flags Public

    OpenRewrite recipes for LaunchDarkly.

    openrewrite/rewrite-feature-flags’s past year of commit activity
    Java 4 4 2 0 Updated Dec 23, 2025
  • rewrite-liberty Public

    OpenRewrite recipes to migrate to the IBM WebSphere Liberty.

    openrewrite/rewrite-liberty’s past year of commit activity
    Java 0 Apache-2.0 7 0 0 Updated Dec 23, 2025
  • rewrite-recipe-markdown-generator Public

    Utility that generates OpenRewrite recipe documentation in markdown format for all recipes on the classpath.

    openrewrite/rewrite-recipe-markdown-generator’s past year of commit activity
    Kotlin 8 Apache-2.0 13 3 0 Updated Dec 23, 2025