Alerts

Push notifications are the backbone of modern alerting. Server went down? Backup failed? Someone logged into your machine? You want to know now, not when you check your email three hours later. Ntfy (pronounced “notify”) lets you send push notifications to your phone or desktop using simple HTTP requests. No app registration, no Firebase setup, no Google Cloud accounts. Just curl and done. What is Ntfy? Ntfy is a self-hosted, HTTP-based pub-sub notification service. You publish messages to “topics” (think of them as channels), and any device subscribed to that topic gets the notification instantly. It works over HTTP, WebSockets, and has native apps for Android and iOS. ...

Every self-hosted setup eventually needs notifications. Watchtower updated a container? You want to know. Backup failed? Alert me. Server disk at 90%? Send a push notification to my phone. Most people use Pushover ($5 one-time), ntfy (hosted service), or Discord webhooks. But if you’re self-hosting everything else, why not self-host your notifications too? Gotify is a simple, self-hosted push notification server with a clean web UI, Android app, and dead-simple REST API. One curl command sends a notification to your phone. ...

Running Changedetection.io: Website Change Alerts You want to know when a product drops in price, when a job posting appears, when a government page updates, or when your competitor changes their pricing. You could check manually every day. Or you could let a self-hosted tool do it for you. Changedetection.io monitors any webpage and alerts you when something changes. It’s like Google Alerts, but for the actual visual content of any page — not just search results. ...