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.

Apache Hadoop Common

Apache POI - Java API To Access Microsoft Format Files

Isolated container management for Java code testing

Avro is a row-oriented remote procedure call and data serialization framework that produces a compact binary format.

Netty module for encoding and decoding binary and text-based messages with reusable codec components.

Jenkins core code and view files to render HTML.

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

Confluence Core

Hive Query Language