Offset Explorer (formerly Kafka Tool) is a powerful GUI tool for managing Apache Kafka® clusters. It offers an intuitive interface to view brokers, topics, and consumers, as well as inspect and manage messages within partitions. With support for JSON, XML, and Avro formats, it simplifies tasks such as adding or removing topics, saving messages, and writing custom plugins. Available for Windows, Linux, and macOS, Offset Explorer is free for personal use, with a 30-day evaluation period for non-personal use before requiring a license.