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.
Artifacts using log4j-core version 2.3.2 (11)
The Apache Log4j SLF4J API binding to Log4j 2 Core
Last Release on Jul 7, 2026
Relocated → org.apache.logging.log4j »
log4j-slf4j2-impl
The Apache Log4j 1.x Compatibility API
Last Release on Jul 7, 2026
The Apache Log4j Commons Logging Adapter
Last Release on Jul 7, 2026
The Apache Log4j support for web servlet containers
Last Release on Jul 7, 2026
A `java.util.logging` Handler that forwards events to the Log4j API.
Last Release on Jul 7, 2026
The Apache Log4j streams to log event converters
Last Release on Jul 7, 2026
NoSQL appenders for Log4j. These include appenders to databases such as MongoDB, Apache CouchDB, and Apache Cassandra.
Last Release on Dec 29, 2021
The Apache Log4j Flume Appender
Last Release on Mar 10, 2024
Small logging facade that backends to a number of standard logging packages and that
can be copied into another project. This allows you to write your code and include log messages
without having a fixed dependency on any one logging package.
Last Release on Mar 2, 2024
The Apache Log4j Tag Library for Web Applications
Last Release on Jul 7, 2026