Coinstate
Track cryptocurrency prices across 9+ exchanges in real-time
Coinstate is a free, open-source cryptocurrency price tracker that aggregates real-time prices from over 10 major exchanges, including Binance, Coinbase, and Kraken, into a single dashboard. Utilizing Bun's native WebSocket, it provides sub-second updates and supports 100,000+ concurrent connections with 60% less memory usage per connection. Coinstate offers side-by-side price comparisons, smart throttling, deduplication, and Redis caching for fast performance. It is built with React 19 and TailwindCSS 4, supports 500,000 messages per second, and requires no account for use. The platform is transparent, verifiable, and allows self-hosting, with full documentation available under the Apache 2.0 license.