Skip to content

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.

Pinned Loading

  1. rewrite rewrite Public

    Automated mass refactoring of source code.

    Java 3k 458

  2. rewrite-spring rewrite-spring Public

    OpenRewrite recipes for Spring projects.

    Java 327 106

  3. rewrite-testing-frameworks rewrite-testing-frameworks Public

    OpenRewrite recipes that perform common Java testing migration tasks.

    Java 88 90

  4. rewrite-maven-plugin rewrite-maven-plugin Public

    OpenRewrite's Maven plugin.

    Java 162 86

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

    OpenRewrite's Gradle plugin.

    Java 74 45

  6. rewrite-docs rewrite-docs Public

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

    TypeScript 46 73

Repositories

Showing 10 of 71 repositories
  • rewrite Public

    Automated mass refactoring of source code.

    openrewrite/rewrite’s past year of commit activity
    Java 2,989 Apache-2.0 458 324 (5 issues need help) 60 Updated Sep 25, 2025
  • rewrite-csharp Public

    OpenRewrite CSharp runtime and LST models

    openrewrite/rewrite-csharp’s past year of commit activity
    C# 6 2 0 1 Updated Sep 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 88 90 59 (5 issues need help) 4 Updated Sep 24, 2025
  • rewrite-github-actions Public

    OpenRewrite recipes for performing GitHub action hygiene and migration tasks.

    openrewrite/rewrite-github-actions’s past year of commit activity
    Java 0 1 50 (9 issues need help) 0 Updated Sep 24, 2025
  • rewrite-migrate-java Public

    OpenRewrite recipes for migrating to newer versions of Java.

    openrewrite/rewrite-migrate-java’s past year of commit activity
    Java 133 99 48 (4 issues need help) 5 Updated Sep 24, 2025
  • rewrite-polyglot Public

    Guest language polyglot support for OpenRewrite

    openrewrite/rewrite-polyglot’s past year of commit activity
    Java 1 Apache-2.0 0 0 1 Updated Sep 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 46 Apache-2.0 73 8 (1 issue needs help) 0 Updated Sep 24, 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 7 Apache-2.0 12 3 0 Updated Sep 24, 2025
  • .github Public
    openrewrite/.github’s past year of commit activity
    0 Apache-2.0 6 0 0 Updated Sep 24, 2025
  • rewrite-recipe-bom Public

    Align version numbers for all OpenRewrite maintained recipe modules

    openrewrite/rewrite-recipe-bom’s past year of commit activity
    13 Apache-2.0 6 1 0 Updated Sep 24, 2025