eclipse-vertx/vert.x

Vert.x is a tool-kit for building reactive applications on the JVM

Java

14,682

7,240 commits

updated Oct 14, 2026

See the code

README

Build Status (5.x) Build Status (4.x)

Vert.x Core

This is the repository for Vert.x core.

Vert.x core contains fairly low-level functionality, including support for HTTP, TCP, file system access, and various other features. You can use this directly in your own applications, and it's used by many of the other components of Vert.x.

For more information on Vert.x and where Vert.x core fits into the big picture please see the website.

Building Vert.x artifacts

> mvn package

Running tests

Runs the tests

> mvn test

Tests can be run with specified HTTP port and/or HTTPS port.

> mvn test -Dvertx.httpPort=8888 -Dvertx.httpsPort=4044

Vert.x supports native transport on BSD and Linux, to run the tests with native transport

> mvn test -PNativeEpoll
> mvn test -PNativeIoUring
> mvn test -PNativeKQueue

Vert.x supports domain sockets on Linux exclusively, to run the tests with domain sockets

> mvn test -PNativeEpoll+DomainSockets

Vert.x has integrations tests that run a differently configured JVM (classpath, system properties, etc....)

> vertx verify -Dtest=FooTest # FooTest does not exists, its only purpose is to execute no tests during the test phase

Building documentation

> mvn package -Pdocs -DskipTests

Open target/docs/vertx-core/java/index.html with your browser

concurrency
event-loop
high-performance
http2
java
jvm
netty
nio
non-blocking
reactive
vertx

eclipse-vertx/vert.x

Vert.x is a tool-kit for building reactive applications on the JVM

Java

14,682

7,240 commits

updated Oct 14, 2026

See the code

README

Build Status (5.x) Build Status (4.x)

Vert.x Core

This is the repository for Vert.x core.

Vert.x core contains fairly low-level functionality, including support for HTTP, TCP, file system access, and various other features. You can use this directly in your own applications, and it's used by many of the other components of Vert.x.

For more information on Vert.x and where Vert.x core fits into the big picture please see the website.

Building Vert.x artifacts

> mvn package

Running tests

Runs the tests

> mvn test

Tests can be run with specified HTTP port and/or HTTPS port.

> mvn test -Dvertx.httpPort=8888 -Dvertx.httpsPort=4044

Vert.x supports native transport on BSD and Linux, to run the tests with native transport

> mvn test -PNativeEpoll
> mvn test -PNativeIoUring
> mvn test -PNativeKQueue

Vert.x supports domain sockets on Linux exclusively, to run the tests with domain sockets

> mvn test -PNativeEpoll+DomainSockets

Vert.x has integrations tests that run a differently configured JVM (classpath, system properties, etc....)

> vertx verify -Dtest=FooTest # FooTest does not exists, its only purpose is to execute no tests during the test phase

Building documentation

> mvn package -Pdocs -DskipTests

Open target/docs/vertx-core/java/index.html with your browser

concurrency
event-loop
high-performance
http2
java
jvm
netty
nio
non-blocking
reactive
vertx

Project health

Overall

4.9/10

Maintained

10/10

Code review

1/10
OpenSSF Scorecard

Significant stargazers

(top 24 of 110)

Daniel Bevenius

655 followers · starred Jun 2011

Inada Naoki

784 followers · starred Feb 2014

Ivan Porto Carrero

356 followers · starred Jun 2011

Joscha Feth

251 followers · starred Jun 2011