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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 589

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

    OpenRewrite recipes that perform common Java testing migration tasks.

    Java 100 109

  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 409 160

  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

    TypeScript 55 78

Repositories

Showing 10 of 79 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 162 136 35 (1 issue needs help) 14 Updated Nov 2, 2026
  • rewrite Public

    Automated mass refactoring of source code.

    openrewrite/rewrite's past year of commit activity
    Java 3,836 Apache-2.0 589 207 80 Updated Nov 2, 2026
  • 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 8 0 0 Updated Nov 2, 2026
  • rewrite-spring Public

    OpenRewrite recipes for Spring projects.

    openrewrite/rewrite-spring's past year of commit activity
    Java 409 160 54 (1 issue needs help) 19 Updated Nov 2, 2026
  • rewrite-jackson Public

    OpenRewrite recipes for modernizing, upgrading, applying best practices for the fasterxml Jackson serialization/deserialization libraries

    openrewrite/rewrite-jackson's past year of commit activity
    Java 6 Apache-2.0 13 0 1 Updated Nov 2, 2026
  • openrewrite/migration-engineering-with-openrewrite's past year of commit activity
    Java 0 0 0 0 Updated Nov 1, 2026
  • break-your-testing-habits Public archive
    openrewrite/break-your-testing-habits's past year of commit activity
    Java 6 3 0 0 Updated Nov 2, 2026
  • rewrite-migrate-gradle Public

    OpenRewrite recipes for identifying and fixing Gradle

    openrewrite/rewrite-migrate-gradle's past year of commit activity
    Java 0 0 0 1 Updated Nov 1, 2026
  • rewrite-javascript-lock-fixtures Public

    Recorded package-manager lock fixtures for rewrite-javascript's native lock regeneration tests

    openrewrite/rewrite-javascript-lock-fixtures's past year of commit activity
    JavaScript 0 Apache-2.0 0 0 0 Updated Nov 1, 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 0 Updated Nov 1, 2026