vrm-client

A fancy self-hosted monitoring tool

The best and simplest free open source web page change detection, website watcher, restock monitor and notification service. Restock Monitor, change detection. Designed for simplicity - Simply monitor which websites had a text change for free. Free Open source web page change detection, Website defacement monitoring, Price change notification

? Automated developer-oriented status page

Lightweight real-time memory management application to monitor and clean system memory on your computer.

Apache HertzBeat(incubating) is a real-time monitoring system with agentless, performance cluster, prometheus-compatible, custom monitoring and status page building capabilities.

Bistoury是去哪儿网的java应用生产问题诊断工具，提供了一站式的问题诊断方案

The open source repository for Electricity Maps App and data parsers that enables a real-time visualisation of the CO2 emissions of electricity consumption

High performance Java APM. Powered by ASM. Try it. Test it. If you feel its better, use it.

Watch (parts of) webpages and get notified when something changes via e-mail, on your phone or via other means. Highly configurable.

? Open source static (serverless) status page. Uses hyperfast Go & Hugo, minimal HTML/CSS/JS, customizable, outstanding browser support (IE8+), preloaded CMS, read-only API, badges & more.