Offset Explorer (formerly Kafka Tool) is a GUI application for managing and using Apache Kafka ® clusters. It provides an intuitive UI that allows you to quickly view objects within a Kafka cluster, as well as the messages stored in its topics. It contains features geared toward both developers and administrators. Some of the key features include:

• Quickly view all your Kafka clusters, including their brokers, topics and consumers
• View contents of messages in your partitions and add new messages
• View offsets of consumers
• Show JSON, XML and Avro messages in a pretty-printed format
• Add and drop topics plus other management features
• Save individual messages from your partitions to local hard drive
• Import messages from local files into Kafka Topics using the Import Tool
• Export messages from Kafka Topics to local files or another topic using the Export Tool
• Generate test data for Kafka Topics using the Data Generator
• Find messages across Topics and Partitions using the Find Messages Tool
• Use the command-line tool for Kafka, Schema Registry, Kafka Connect, and message operations
• Write your own plugins that allow you to view custom data formats
• Offset Explorer runs on Windows, Linux and Mac OS
• Support for Bulgarian, Chinese, Finnish, French, German, Greek, Italian, Japanese, Korean, Polish, Portuguese, Romanian, Spanish, Swedish, Turkish and Ukrainian

Offset Explorer is free for personal use only. Any non-personal use, including commercial, educational and non-profit work is not permitted without purchasing a license. Non-personal use is allowed for evaluation purposes for 30 days following the download of Offset Explorer, after which you must purchase a valid license or remove the software.