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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 3.3k 500

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

    OpenRewrite recipes that perform common Java testing migration tasks.

    Java 90 101

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

    OpenRewrite's Maven plugin.

    Java 173 89

  4. rewrite-spring rewrite-spring Public

    OpenRewrite recipes for Spring projects.

    Java 368 127

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

    OpenRewrite's Gradle plugin.

    Java 79 47

  6. rewrite-docs rewrite-docs Public

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

    TypeScript 49 74

Repositories

Showing 10 of 74 repositories
  • rewrite Public

    Automated mass refactoring of source code.

    openrewrite/rewrite’s past year of commit activity
    Java 3,265 Apache-2.0 500 318 (1 issue needs help) 51 Updated Jan 28, 2026
  • rewrite-spring Public

    OpenRewrite recipes for Spring projects.

    openrewrite/rewrite-spring’s past year of commit activity
    Java 368 127 76 (6 issues need help) 4 Updated Jan 28, 2026
  • rewrite-migrate-java Public

    OpenRewrite recipes for migrating to newer versions of Java.

    openrewrite/rewrite-migrate-java’s past year of commit activity
    Java 145 110 54 (4 issues need help) 3 Updated Jan 28, 2026
  • rewrite-polyglot Public

    Guest language polyglot support for OpenRewrite

    openrewrite/rewrite-polyglot’s past year of commit activity
    Java 1 Apache-2.0 1 0 1 Updated Jan 28, 2026
  • 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 74 5 (1 issue needs help) 0 Updated Jan 28, 2026
  • openrewrite/rewrite-spring-to-quarkus’s past year of commit activity
    Java 1 1 29 1 Updated Jan 27, 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 8 Apache-2.0 13 3 0 Updated Jan 27, 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 90 101 55 (6 issues need help) 4 Updated Jan 27, 2026
  • gh-automation Public

    Shared GitHub Actions workflows which are used by multiple repositories under the OpenRewrite GitHub organization.

    openrewrite/gh-automation’s past year of commit activity
    1 Apache-2.0 3 1 0 Updated Jan 27, 2026
  • jgit Public

    Forked from eclipse jgit

    openrewrite/jgit’s past year of commit activity
    Java 1 2 0 0 Updated Jan 27, 2026