Chainsaw (log file viewer)

Chainsaw is a java-based GUI software tool to view and analyze computer log files - specifically logs generated by the Log4j logging system. Both Log4j and Chainsaw are Open source projects under Apache Software Foundation. The latest release is Chainsaw v2.[2] Chainsaw can read log files formatted in Log4j's XMLLayout, receive events from remote locations, read events from a DB, or work with JDK 1.4 logging events.

Apache Chainsaw
Developer(s)Apache Software Foundation
Stable release
2.0.0 / January 20, 2018 (2018-01-20)[1]
RepositoryChainsaw Repository
Written inJava
Operating systemCross-platform
LicenseApache License 2.0


The project is licensed under Apache License, V 2.0. Dependencies may not follow the same licensing.[3]


Open Source License

Commercial License


  1. "ASF Git Repos - logging-chainsaw.git/tag". Retrieved 9 September 2019.
  2. "Apache Chainsaw v2 Download'". Retrieved 2008-01-30.
  3. "Apache Chainsaw Project License'". Archived from the original on 2008-01-19. Retrieved 2008-01-30.
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