eKuiper is a lightweight and high-performance stream processing engine for IoT data analytics at the edge. Designed for use on resource-constrained devices like Raspberry Pi, industrial gateways, and embedded systems, eKuiper enables local data filtering, transformation, and real-time analytics using SQL-based or visual rule configurations. It supports ETL operations, data aggregation, and integration with cloud platforms (e.g., EdgeX Foundry, MQTT, Kafka). Ideal for edge-first applications in smart farming, energy systems, and industrial IoT, it reduces latency and bandwidth usage by processing data close to the source.