NetPulse is an open-source, browser-based internet diagnostics tool that continuously monitors your connection — not just a one-shot speed test. Multi-connection download & upload tests (4 parallel streams), real-time ping, jitter, packet loss tracking, and a live stability score. ✅ No login, no tracking, no data collection ✅ Download-only, upload-only, or both ✅ Export as TXT, CSV, or JSON ✅ WiFi alignment mode for dead-zone hunting ✅ 100% open source (MIT)