Upptime is described as 'GitHub-powered open-source uptime monitor and status page' and is a Uptime Monitor in the Network & Admin category. There are more than 100 alternatives to Upptime for a variety of platforms, including Online / Web-based, SaaS, Windows, Linux and Mac. The best alternative is UptimeRobot, which is free. Other great apps like Upptime are Better Uptime (Freemium), Pingdom (Paid), Freshping (Free) and PHP Server Monitor (Free, Open Source).
NetCrunch is an all-in-one and agentless network, server, application, log, file and web monitoring suite, capable of monitoring more than 1 million elements at once. It runs on Windows Server and only needs 4GB of RAM and 4 cores.
Pingbreak is an original and free monitoring service. Get notified through Twitter if your website is down. Pingbreak checks all of your websites each minute and alert you instantly by Direct Message (DM).
Monitor and communicate the status of your site, app or API with your very own status page. Create it in less than 3 minutes with Statuspal! Or host it yourself for free with our open source community edition.