ratpack/ratpack

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

1949 stars · 402 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Ratpack is a set of Java libraries built on the Netty event-driven networking engine for creating lean, high-performance HTTP web applications. Its API is optimized for Java 8 and Groovy, with optional Google Guice integration and Gradle build-time support.

Use cases

• build high-performance HTTP APIs on the JVM
• create web applications in Java or Groovy
• build event-driven non-blocking web services with Netty
• structure large applications with dependency injection via Guice
• build and test JVM web apps with Gradle integration

When to choose

• you want a lean toolkit rather than an all-encompassing framework
• you need non-blocking, event-driven HTTP handling on the JVM
• your team works in Java 8 or Groovy
• you want optional, composable Guice integration

When to avoid

• you need a batteries-included framework with extensive current documentation
• you want a framework with frequent recent releases (2.0 has been in RC since 2022)
• you prefer Kotlin-first or Spring-ecosystem tooling

Facets

framework · maturity maintenance

web-framework http-server routing middleware web-development backend apis jvm cross-platform netty groovy reactive http-apps guice

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markdown · JSON · MCP: product_card(name="ratpack/ratpack")