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Get fast, repeatable source code refactoring

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

OpenRewrite is offered under a tiered licensing model. See Licensing for how the framework, parsers, and recipes are licensed.

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 3.8k 585

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

    OpenRewrite recipes that perform common Java testing migration tasks.

    Java 100 107

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

    OpenRewrite's Maven plugin.

    Java 190 92

  4. rewrite-spring rewrite-spring Public

    OpenRewrite recipes for Spring projects.

    Java 407 154

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

    OpenRewrite's Gradle plugin.

    Java 89 49

  6. rewrite-docs rewrite-docs Public

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

    HTML 55 78

Repositories

Showing 10 of 77 repositories
  • rewrite-migrate-java Public

    OpenRewrite recipes for migrating to newer versions of Java.

    openrewrite/rewrite-migrate-java's past year of commit activity
    Java 160 133 43 20 Updated Oct 20, 2026
  • rewrite Public

    Automated mass refactoring of source code.

    openrewrite/rewrite's past year of commit activity
    Java 3,804 Apache-2.0 585 217 82 Updated Oct 20, 2026
  • 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 9 Apache-2.0 12 3 0 Updated Oct 20, 2026
  • rewrite-third-party Public

    OpenRewrite recipes maintained by third parties.

    openrewrite/rewrite-third-party's past year of commit activity
    Java 2 Apache-2.0 2 0 2 Updated Oct 20, 2026
  • rewrite-spring Public

    OpenRewrite recipes for Spring projects.

    openrewrite/rewrite-spring's past year of commit activity
    Java 407 154 52 15 Updated Oct 20, 2026
  • rewrite-testing-frameworks Public

    OpenRewrite recipes that perform common Java testing migration tasks.

    openrewrite/rewrite-testing-frameworks's past year of commit activity
    Java 100 107 33 (1 issue needs help) 21 Updated Oct 20, 2026
  • rewrite-micronaut Public

    OpenRewrite recipes for Micronaut.

    openrewrite/rewrite-micronaut's past year of commit activity
    Java 14 Apache-2.0 7 7 0 Updated Oct 20, 2026
  • rewrite-static-analysis Public

    OpenRewrite recipes for identifying and fixing static analysis issues.

    openrewrite/rewrite-static-analysis's past year of commit activity
    Java 64 114 109 (4 issues need help) 31 Updated Oct 20, 2026
  • rewrite-hibernate Public

    OpenRewrite recipes for Hibernate ORM.

    openrewrite/rewrite-hibernate's past year of commit activity
    Java 8 13 7 0 Updated Oct 20, 2026
  • openrewrite/rewrite-dropwizard's past year of commit activity
    Java 0 Apache-2.0 3 0 0 Updated Oct 20, 2026