UptimeRobot
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.
Free simple website monitoring tool. Monitors unlimited websites with a 1-minute frequency, completely free.
Checks your websites every minute or larger intervals according to settings. If the website does not work it alerts you by email. Easy setup – just a simple signup form and then enter the name and URL of your website, then your website will be monitored. You can view the current status of your website on a liveupdating dashboard.
website-monitoring uptime-monitoring
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.
Freemium Web
StatusCake enables the visitor to track unlimited websites for free and get alerts when the site is down or having trouble. StatusCake also tracks performance over time so a webmaster can detect issues because they arise.
Freemium Web
Pingoscope will carefully monitor your website and alert you instantly if it goes down.
Freemium Web
You can monitor up to 5 URLs with 1-minute monitoring interval, for FREE!
Free Web
Website downtime alerts and website monitoring - receive email alerts and SMS alerts worldwide if your website goes down. 60 websites monitored every 3 minutes...
Freemium Web
Servitor is the easiest way to monitor your servers and website for resources, uptime, ssl certificates, mixed contents en broken links.
Freemium Linux Web