condux‑client is a JavaScript library that lets browser (or React) applications communicate with a Condux server using a single SockJS websocket. It provides Reflux‑style actions to send commands to the server and “Frequencies” (read‑only data streams) that can be subscribed to, with built‑in reconnection/persistence handling, making it ideal for developers building real‑time, unidirectional‑flow web apps that need reactive server‑side state.