Dataloop.io is described as 'Effortless monitoring for your online service'. There are more than 50 alternatives to Dataloop.io, not only websites but also apps for a variety of platforms, including Linux, Windows, Mac and Android. The best alternative is Zabbix, which is both free and Open Source. Other great sites and apps similar to Dataloop.io are Nagios (Freemium, Open Source), Datadog (Paid), Spiceworks Help Desk (Free) and Icinga (Freemium, Open Source).
This is a simple monitor for temperature, fans, cpu and gpu usage; made for the powerful linux Simply extract the folder in your web server, run it and follow the instructions given when browsing with your web browser.
Xymon is a tool for monitoring servers, applications and networks. It collects information about the health of your computers, the applications running on them, and the network connectivity between them.