Apache Commons Compress defines an API for working with compression and archive formats. These include bzip2, gzip, pack200, LZMA, XZ, Snappy, traditional Unix Compress, DEFLATE, DEFLATE64, LZ4, Brotli, Zstandard and ar, cpio, jar, tar, zip, dump, 7z, arj.

Implementation for Apache Log4J, a highly configurable logging tool that focuses on performance and low garbage generation. It has a plugin architecture that makes it extensible and supports asynchronous logging based on LMAX Disruptor.

Utilities

XWiki Platform - Old Core

Java API Client for Docker

Open and Free PDF library. It uses the new package name `org.openpdf`.

A set of miscellaneous utility classes

Concord Common

MyCoRe Base Components

Kylin Core Common

This module contains non-RDF library code and the common system runtime.