Solana is a blockchain platform designed to host decentralized, scalable applications. Founded in 2017, it is an open-source project currently run by Solana Foundation based in Geneva, while the blockchain was built by San Francisco-based Solana Labs.
Apache Kafka is a distributed event store and stream-processing platform. It is an open-source system developed by the Apache Software Foundation written in Java and Scala. The project aims to provide a unified, high-throughput, low-latency platform for handling real-time data feeds. Kafka can connect to external systems (for data import/export) via Kafka Connect, and provides the Kafka Streams libraries for stream processing applications.