Pandora FMS is a software-monitoring tool which has been created for all kinds of companies. It is specially designed for large environments and works by first managing servers, applications, and communications, and then notifying clients of problems and failures before they occur. Pandora FMS also includes a configurable report system which evaluates and notifies the client on the level of fulfilment and compliance of their systems. It supports all kinds of technologies unifying the management tools of your system, such as performance monitoring, network monitoring, and availability management. Pandora FMS makes your company management more agile and improves your process performance.
Shinken is an advanced monitoring system that is based on Nagios, but redesigned and rewritten from scratch while maintaining compatibility. It can monitor all IT devices from systems to end user applications. In case of a failure, Shinken can alert the operation engineers so they can promptly repair it. It has the same capabilities as Nagios along with more advanced built-in facilities such as load balanced and high availability monitoring.
jWatchdog delivers a simple watchdog to actively monitor your infrastructure and send you notifications in case something goes wrong. It is configured using a simple XML configuration file. This configuration file can be changed on-the-fly without a need to restart the watchdog. jWatchdog does not offer data collection itself. It assumes that you already collected the data on which you want to run jWatchdog. The de facto standard tool Collectd is recommended for data collection. jWatchdog assumes that you use the RRDTool collectd output plugin to store the collected data in RRD files, or use Graphite as a datasource.