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Dev tools · January 18, 2026

Qrystal Uplink

The cloud-based watchdog for IoT.

Qrystal Uplink launched on January 18, 2026 with 14 votes, #815 of 14,584 launches that month and more than 90% of that year's launches. The site was not reachable when checked in September 2026.

What it does

Stop building custom backends to track IoT uptime. Qrystal Uplink is a cloud-based watchdog for ESP32 & embedded fleets. We use "fail-closed" logic: if your device goes silent (crash, power loss, freeze), we alert you instantly via Email (as well as Slack, Telegram, etc. in the future). Replace weeks of infrastructure work with 5 minutes of integration: • Officially maintained platform SDKs. • One line of code. • No servers to manage. Focus on your firmware. Let us handle the plumbing.

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