Live whale wallet tracker (25 famous Ethereum addresses), Binance Futures funding rates with crowded-trade signals, 30-day Fear & Greed chart, CoinGecko top 100 screener, and live crypto news feed — all from 5 free public APIs. Vanilla HTML/CSS/JS, ~4,200 LOC, no build step, deploys to Vercel free tier in 15 minutes. Open demo (no signup needed). MIT-licensed boilerplate also available in 3 tiers for indie devs entering crypto SaaS.
