Streambench — Kafka and NATS JetStream GUI for macOS

StreambenchLike TablePlus, but for streams. A local Apple Silicon desktop app with a Rust broker core. Connect to Kafka, Redpanda, or NATS JetStream brokers you already run, then browse topics, tail messages, inspect consumer lag, and manage streams from one minimalist GUI.Free 14-day trial · Apple Silicon (M-series) · No Streambench account requiredLooking for a specific workflow? See the Kafka GUI and NATS JetStream GUI pages.Built for day-to-day stream workLive and paged message viewsTail topics in real time or browse historical pages. Seek by offset, sequence, timestamp, or from the beginning in a virtualized list.Kafka, Redpanda, and NATS JetStreamOne macOS desktop app for Kafka-compatible brokers and NATS JetStream. Topics, partitions, consumer groups, streams, consumers, and KV buckets.Consumer lag at a glancePer-partition committed offsets, high watermarks, and lag totals refreshed live. Reset consumer group offsets without a CLI.Produce and publishSend Kafka messages with keys, headers, and explicit partitions. Publish to NATS subjects with headers from a dedicated panel.Filters that stay responsiveText filters run locally in Rust before IPC. On very high-throughput tails the view may sample to keep the UI responsive while counters stay accurate.Credentials stay on your MacSASL passwords and tokens live in the macOS Keychain. Connection profiles and credential file paths stay in local app data, never on our servers.Simple pricing$89one-time purchase✓ Perpetual license for the version you buy✓ 12 months of updates included✓ Use on up to 3 Macs✓ Kafka, Redpanda, and NATS JetStreamBuy StreambenchSecure checkout and global tax handled by Polar. License key delivered instantly.Guides and product pagesConnecting to Kafka in DockerFix advertised.listeners when localhost connects but consume or produce hangs.Kafka GUI for MacBrowse topics, tail messages, inspect consumer lag, and manage Kafka or Redpanda from macOS.NATS JetStream GUI for MacManage streams, consumers, KV buckets, and live message tails from a local desktop app.© 2026 Streambench · Docs · Privacy · Support