High performance Java reflection

RNGOM is an open-source Java library for parsing RELAX NG grammars.

Semantic versioning for Java apps.

scala-xml

rxjava

Serpent serializes an object tree into a Python ast.literal_eval() compatible literal expression. It is safe to send serpent data to other machines over the network for instance (because only 'safe' literals are encoded). There is also a deserializer or parse provided that turns such a literal expression back into the appropriate Java object tree. It is an alternative to JSON to provide easy data integration between Java and Python. Serpent is more expressive as JSON (it supports more data types).

This library allows your Java program to interface very easily with the Python world. It uses the Pyro protocol to call methods on remote objects. (See https://github.com/irmen/Pyro4). To that end, it also contains and uses a feature complete pickle protocol implementation -read and write- to exchange data with Pyro/Python. Pyrolite only implements part of the client side Pyro library, hence its name 'lite'... But because Pyrolite has no dependencies, it is a much lighter way to use Pyro from Java/.NET than a solution with jython+pyro or IronPython+Pyro would provide. So if you don't need Pyro's full feature set, and don't require your Java/.NET code to host Pyro objects itself, Pyrolite may be a good choice to connect java or .NET and python. (More info about Pyro itself: https://pyro4.readthedocs.io/ ) Version 4.30 changes: Support for unpickling protocol 5 pickles with out-of-band buffers (Python 3.8)

Pseudo scala libs

Roaring bitmaps are compressed bitmaps (also called bitsets) which tend to outperform conventional compressed bitmaps such as WAH or Concise.

Servlet Specification API

Core instrumentation library for the simpleclient.

The Apache Software Foundation provides support for the Apache community of open-source software projects. The Apache projects are characterized by a collaborative, consensus based development process, an open and pragmatic software license, and a desire to create high quality software that leads the way in its field. We consider ourselves not simply a group of projects sharing a server, but rather a community of developers and users.

Spark Project Networking

The Apache Software Foundation provides support for the Apache community of open-source software projects. The Apache projects are characterized by a collaborative, consensus based development process, an open and pragmatic software license, and a desire to create high quality software that leads the way in its field. We consider ourselves not simply a group of projects sharing a server, but rather a community of developers and users.

Spark Project Shuffle Streaming Service

The Apache Software Foundation provides support for the Apache community of open-source software projects. The Apache projects are characterized by a collaborative, consensus based development process, an open and pragmatic software license, and a desire to create high quality software that leads the way in its field. We consider ourselves not simply a group of projects sharing a server, but rather a community of developers and users.

Annotations the SpotBugs tool supports

StAX is the reference implementation of the StAX API

A library for summarizing data in streams for which it is infeasible to store all events

Data structure which allows accurate estimation of quantiles and related rank statistics

SubstrateVM image builder components

Interface code to the native connector

Native function interface for the Truffle framework.

Sonatype helps open source projects to set up Maven repositories on https://oss.sonatype.org/

Truffle is a multi-language framework for executing dynamic languages that achieves high performance when combined with Graal.

Wagon that gets and puts artifacts using file system protocol

Wagon that gets and puts artifacts through http using standard Java library

Shared Library for the wagon-http, and wagon-http-lightweight wagon providers.

Maven Wagon API that defines the contract between different Wagon implementations

Weld runtime packaged as an OSGi bundle

Repackaged and shaded asm jars

A Java library that allows for easy parsing and inspection of XML schema docs

XStream is a serialization library from Java objects to XML and back

A JNI library for acessing leveldb

A High Dynamic Range (HDR) Histogram

args4j is a Java command line arguments parser

Annotations for defining API boundaries and tools for managing javadocs

Easy Command Line option reading in Java

The core functionality of the CodeModel java source code generation library

Tools to assist in reading of configuration/preferences files in various formats

Expression language engine, can be embedded in applications and frameworks

Applies XPath expressions to graphs of objects of all kinds

Conscrypt: OpenJDK UberJAR

A fast and flexible deduplication engine

Cache used to boost performance, offload database and simplify scalability

Helper routines for compiling or running any f2j-generated Java code

Matrix data structures, linear solvers, least squares methods, eigenvalue, SVDs

Mission-critical components for linear algebra systems

The GPars concurrency and parallelism framework for the JVM

Groovy: A powerful, dynamic language for the JVM