Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

High Performance Inter-Thread Messaging Library

Zipkin is a distributed tracing system

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

A fast dependency injector for Android and Java.

Runtime code generation for the Java virtual machine.

An enhanced Guava-based event bus with emphasis on Android support.

FlatLaf - Swing Look and Feel (with Darcula/IntelliJ themes support)

ssh, scp and sftp for java

Stream summarizer and cardinality estimator.

Java libraries for writing composable microservices

XobotOS - Android ported to C#

A Java implementation of the Mustache templating language.

A programmable, embeddable web browser driver compatible with the Selenium WebDriver spec -- headless, WebKit-based, pure Java

ECMAScript runtime for the JVM

Java™ Binding for the OpenGL® API

Actors for Java

CSSBox is an (X)HTML/CSS rendering engine written in pure Java. Its primary purpose is to provide a complete information about the rendered page suitable for further processing. However, it also al…

Jitescript - Java API for Bytecode

Less language is an extension of css and less4j compiles it into regular css. Less adds several dynamic features into css: variables, expressions, nested rules, and so on. Less was designed to be c…

A simple, lightweight library for common latitude and longitude calculation needs in Java.

Java HTTP Client in OOP style

JATL : Java Anti-Template Language

Java library for creating components and pages that produce HTML using only Java

Log4J Appender using JDK 7's AsynchronousFileChannel

Java port of Microsoft's ASP.Net MVC Web stack