OpsDash is described as 'server monitoring, service monitoring, database monitoring, app metric monitoring and uptime monitoring solution for monitoring MySQL, PostgreSQL, MongoDB, Docker, Memcache, Redis, Apache, Nginx, Elasticsearch and more'. There are more than 25 alternatives to OpsDash for a variety of platforms, including Online / Web-based, Linux, Mac, Windows and Self-Hosted solutions. The best alternative is Zabbix, which is both free and Open Source. Other great apps like OpsDash are UptimeRobot (Freemium), Nagios (Freemium, Open Source), Prometheus (Free, Open Source) and Better Uptime (Freemium).
Hosted Graphite is a monitoring service for development teams who run applications at scale. We take the data produced by your apps and servers, visualize it on graphs, then let you act upon the data provided by beautiful Grafana dashboards.
Pinger Man is a modern platform to monitor Uptime of Websites and Applications. It supports notification via Email, SMS and Web Hooks. Users can also showcase the uptime of their services using Public Status Pages.