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Best and simplest tool for website change detection, web page monitoring, and website change alerts. Perfect for tracking content changes, price drops, restock alerts, and website defacement monitoring—all for free or enjoy our SaaS plan!

:trollface: Self-hosted, lightweight server and website monitoring and O&M tool

Status Page for monitoring your websites and applications with beautiful graphs, analytics, and plugins. Run on any type of environment.

sitespeed.io is an open-source tool for comprehensive web performance analysis, enabling you to test, monitor, and optimize your website’s speed using real browsers in various environments.

Tianji: Insight into everything, Website Analytics + Uptime Monitor + Server Status. not only another GA alternatives

Monitor your websites, showcase status including daily history, and get Slack/Telegram/Discord notification whenever your website status changes. Using Cloudflare Workers, CRON Triggers, and KV storage.

A cross-platform java application for decoding, monitoring, recording and streaming trunked mobile and related radio protocols using Software Defined Radios (SDR). Website:

Monitor your Website and APIs from your Computer. Get Notified through Slack, E-mail when your server is down or response time is more than expected.

A Anti-DDoS script to protect Nginx web servers using Lua with a HTML Javascript based authentication puzzle inspired by Cloudflare I am under attack mode an Anti-DDoS authentication page protect yourself from every attack type All Layer 7 Attacks Mitigating Historic Attacks DoS DoS Implications ... Read more

Pa11y Dashboard is a web interface which helps you monitor the accessibility of your websites