jooby-project/jooby

Health v2 · maintenance only

Adoption not part of the score

1780 stars · 201 forks observed · 2026-08-28

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

Jooby is a modular, high-performance web framework for Java and Kotlin that runs on Netty, Jetty, or Undertow. It offers both a fluent Script API and an annotation-based MVC API, with 50+ modules for database access, security, OpenAPI generation, and more.

Use cases

• build a REST API in Java or Kotlin
• create lightweight microservices with fast startup
• generate OpenAPI/Swagger docs automatically from code
• build web apps with hot-reload during development
• write reactive endpoints with Kotlin coroutines or RxJava
• serve static sites and SPAs from a JVM backend

When to choose

• you want a fast, lightweight JVM web framework with low memory footprint
• you need first-class Kotlin DSL support alongside Java
• you want modular dependencies where you only include what you use
• you need built-in OpenAPI 3 documentation generation
• you want choice of server engine (Netty, Jetty, Undertow)

When to avoid

• your team is standardized on Spring Boot's ecosystem and tooling
• you need a non-JVM language
• you prefer a full-stack batteries-included framework with opinionated defaults
• your project requires a framework with a larger community and plugin marketplace

Facets

framework · maturity active

web-framework routing middleware templating api-framework http-server web-development backend apis microservices developer-tools jvm cross-platform netty jetty undertow openapi hot-reload microservices kotlin-coroutines reactive

Member repositories

For agents

markdown · JSON · MCP: product_card(name="jooby-project/jooby")