Monitoshi is described as 'Website uptime monitoring. Be notified by email when your site is down. Free and open source, monitor as many URLs as you want. You can hack it and host it yourself or use the official instance' and is a Uptime Monitor service in the network & admin category. There are more than 50 alternatives to Monitoshi, not only websites but also apps for a variety of platforms, including SaaS, Self-Hosted, Linux and Mac apps. The best Monitoshi alternative is Uptime Kuma, which is both free and Open Source. Other great sites and apps similar to Monitoshi are Tianji, UptimeRobot, Pingdom and Kener.