Latest STABLE version

The latest stable SLF4J is version 1.7.29.

EXPERIMENTAL/UNSTABLE version

SLF4J version 2.0.0-alpha1 is the most recent but it is also experimental/unstable.

Maven central

SLF4J artifacts such as .jar, .sources.jar and javadoc.jar files can be downloaded from Maven central. The corresponding groupId is org.slf4j.