Downdetector is described as 'monitors over 3,000 services in 25 countries including telecommunication outages (internet, phone and TV service), online banking problems, websites that go down and apps that aren’t working' and is an app in the news & books category. There are more than 50 alternatives to Downdetector for a variety of platforms, including Online / Web-based, SaaS, Self-Hosted solutions, Android and iPhone. The best alternative is UptimeRobot, which is free. Other great apps like Downdetector are Pingdom, Freshping, Uptime Kuma and Down For Everyone Or Just Me?.
Dashboard with 50 Monitors, Checked Every 5 Minutes, Totally Free.
Monitor HTTP(S), Ping, Port and check Keywords.
Get alerted via e-mail, SMS, Twitter, web-hooks or push.
View uptime, downtime and response times.
Pingdom web site monitoring and other infrastructure for you and instantly let you know when anything goes wrong. Measure uptime, downtime, and the performance of your website as experienced by visitors.
StatusCake.com is a free website monitoring tool which allows users to track up to 10 websites and get alerted when their site is down or is having trouble. Downtime root cause analysis is included in the free plan to help users diagnose and fix issues.