CrystalDiskInfo is a lightweight, open‑source HDD/SSD/NVMe monitoring tool that gives you instant visibility into drive health, temperature, SMART attributes, and early‑warning signs of failure

Highlights

📊 SMART health status + temperature display

🔔 Alarm notifications for failing drives

🧩 Supports USB, RAID, and NVMe devices

🪶 Extremely lightweight and easy to use

Perfect for anyone who wants proactive drive monitoring without bloat. A must‑have in any diagnostic or maintenance toolkit.