UptimeBar is a simple OS X menu bar app that notifies you if any of your websites are down. It connects to the UptimeRobot API to get up to date information every few seconds.
UptimeRobot is trusted by over 500,000 users, meaning you can be sure we'll notify you as soon as something is wrong!
Enso is a web monitoring tool that gives your website a health check, so you could focus on doing the things that matter to you.
Simply enter your website’s URL and leave it to Enso to notify you of any errors or downtimes that come across your website on email, slack, or, SMS.
Enso features advanced configurations options and an desktop app
Downtime Monkey is an uptime monitoring tool that alerts you via email or SMS if your website goes down.
60 websites monitored every 3 minutes, totally free.
SMS alerts to over 130 countries & 300 networks.
Uptime stats and logs.
Powerful Pro features including 1 minute checks, rate limiting & scheduling of alerts, and reasons for downtime.