Apache NiFi vs KSQL: What are the differences?
Apache NiFi: A reliable system to process and distribute data. An easy to use, powerful, and reliable system to process and distribute data. It supports powerful and scalable directed graphs of data routing, transformation, and system mediation logic; KSQL: Open Source Streaming SQL for Apache Kafka. KSQL is an open source streaming SQL engine for Apache Kafka. It provides a simple and completely interactive SQL interface for stream processing on Kafka; no need to write code in a programming language such as Java or Python. KSQL is open-source (Apache 2.0 licensed), distributed, scalable, reliable, and real-time.
Apache NiFi and KSQL belong to "Stream Processing" category of the tech stack.
KSQL is an open source tool with 2.37K GitHub stars and 493 GitHub forks. Here's a link to KSQL's open source repository on GitHub.