Question: Can you recommend a service that monitors website uptime and alerts me when a page goes down?

If you want a full-featured monitoring service, Site24x7 is a good option. It has a lot of features, including website monitoring from 130 locations, real user monitoring, synthetic web transaction monitoring and AI-based anomaly detection. Site24x7 alerts you immediately so you can fix problems before they become problems, and it has several pricing tiers with a 30-day free trial.

Another option is Spectate, which offers uptime monitoring, AI-powered status pages and customizable branded status pages. It's geared for agencies, startups and SaaS companies, with Slack and Pushover integration to help you quickly handle incidents. It offers flexible pricing tiers, including a free Hobby plan and a Pro plan for €59 per month.

If you're looking for a lightweight, Slack-integrated monitoring service, Simple Uptime could be a good fit. It lets you monitor any URL continuously and alerts you to downtime with a message in your Slack channel. It's easy to set up, requiring no sign-up or complicated configuration. It's good for teams that want a basic, built-in monitoring service.

Finally, Datadog is an all-in-one monitoring service with infrastructure monitoring, APM, synthetic monitoring and real user monitoring. It also monitors a broad range of cloud services and can help you optimize digital experience and deliver software. It's good for many industries, and you can try it with a free trial.