A simple expressive web framework for java. Spark has a kotlin DSL https://github.com/perwendel/spark-kotlin

A Java to iOS Objective-C translation tool and runtime.

The missing bridge between Java and native C++

JeroMQ is a pure Java implementation of the ZeroMQ messaging library, offering high-performance asynchronous messaging for distributed or concurrent applications.

A High Dynamic Range (HDR) Histogram

A Java/Android library for communicating with the Signal messaging service.

Yet another markdown processor for the JVM

Federated Matrix Identity Server

Java bytecode analysis/deobfuscation tool

Spring Security Kerberos

Utility for creating RFC-compliant multipart and form-encoded HTTP request bodies.

Graylog Extended Log Format (GELF) implementation in Java and log4j appender without any dependencies.

Write cross platform mobile apps, in Java

Constrained Application Protocol (CoAP) Interactive Shell

Convert between data and transfer objects

A simple implementation of a compiler which transforms SASS to CSS files

Some helpful plugins for bumping versions for release and to the next snapshot version

Provides a release rollback functionality that deletes git tags created by a maven release, rolls back the release and deletes any artifacts deployed as part of the release