Price drops, restocks, job postings, government announcements, competitor edits - changedetection.io watches web pages and alerts you the moment anything changes, down to PDF text and checksums. Point it at a URL, set a check interval, and precise filters decide what counts as a change: a Visual Selector targets page elements by pointing and clicking, CSS selectors and XPath narrow scope, trigger-text and ignore-text rules (with regex support) cut noise, and JSONPath or jq handles API responses. A dedicated re-stock and price detection mode extracts product metadata and fires on thresholds - alert only when the price drops below your target or the percentage change exceeds a limit. JavaScript-heavy sites render through a real Chrome browser via Playwright, with the ability to execute JS steps first (log in, click, scroll) before extracting text. Notifications reach 85+ services through Apprise - Discord, Slack, Telegram, email, webhooks - optionally with a screenshot of the changed page, and AI-powered summaries (any OpenAI-compatible endpoint, including local Ollama) describe what changed. Per-watch proxies, custom headers, and POST/GET control cover hostile targets. Apache-2.0 licensed with local file-based storage: the URLs you monitor and why stay entirely your business.

Meet Prometheus, the monitoring superhero you never knew you needed! Forget about those boring old dashboards that look like they were designed in the 90s—Prometheus brings your metrics to life with the flair of a disco ball at a developer party! This open-source marvel collects data from your targets faster than you can say "scalability" and alerts you when things go south, ensuring you're always one step ahead of disaster (or at least one alert ahead). With its time-series storage, you can track your application's performance like a hawk, while PromQL lets you query data in real-time, making you feel like a data wizard casting spells. Plus, it plays well with others—integrating seamlessly with Docker, Kubernetes, and even your favorite alerting tools like Alertmanager, which means you'll get notifications via email, Slack, or carrier pigeon (okay, maybe not the last one). So, if you're tired of your monitoring tools being about as useful as a chocolate teapot, give Prometheus a whirl and watch your infrastructure shine brighter than your last side project!