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.

Jenkins core code and view files to render HTML.

Plexus component for creating and extracting archive files like ZIP and TAR.

Apache Commons VFS is a Virtual File System library.

Apache Tika Parser Modules

XWiki Platform - Old Core

The Waikato Environment for Knowledge Analysis (WEKA), a machine learning workbench. This version represents the developer version, the "bleeding edge" of development, you could say.

DKPro Core ASL Resources API

The base module for all adams related applications, contains all the core components for GUI and flow related development.

The jQAssistant Plugin Common provides a set of common classes which can be used by all jQAssistant plugins.