Apps similar to Online and Offline include Pingdom. It's paid, but Down For Everyone Or Just Me? and Is It Down Right Now? are free. Other options are HetrixTools, Upzilla, Nodeping and Site Down. Uptime Monitor Services like Online and Offline are a crowded field, with more than 25 alternatives for the web, Mac, Windows, Linux and iPhone.
Shoppimon simulates live shoppers visiting your Magento store and tells you if your site is slow or has errors. Shoppimon also shows you how your store compares to other Magento stores it watches. Shoppimon was designed for non-technical store owners, and requires no installation.
United Kingdom
Website Uptime and performance monitoring service for developers. Don't let your users have downtime browsing.
Standard uptime monitoring with alerts that include diagnostic information, timing breakdowns and dashboard snapshots. Configure alerts for HTTP statuses, reachability and performance thresholds.
Down for me or everyone is used to check if a website is down for me or everyone. It Helps you find whether the website you are trying to browse is down or not. Check if the website is down just for me or everyone around the globe.
When you're unable to open a website, it doesn't necessarily mean that it is down. It may also be a local problem on your side or a network problem in your area.
Poland
EU
UPDOWNTODAY allows you to check whether the website is down or not. Just enter the url, and a new site status test will be performed in real time.
DownBlocked.com checks if a domain name or a website is down or blocked. It also checks all IP addresses and name servers of a site.
Norway