jmxtrans is effectively the missing connector between JMX and whatever logging or graphing package that you can dream up. jmxtrans is very powerful tool that reads JSON configuration files specifying servers/ports and JMX domains/attributes and then outputs the data in whatever format you want via special "Writer" objects that you can code up yourself. It does this with a very efficient engine design that will scale to querying literally thousands of machines. The core engine is pretty solid and writers are included for cacti/rrdtool, graphite, and stdout.
DaVINCI is a dashboard builder and editor for Nagios systems. It can be used to add advanced visualization functionalities for Nagios-based management applications. Its editor uses a drag and drop interface to allow users get monitoring indicators and information directly from their databases and show them in a graphical and animated dashboard, without having to write a single line of code.
OpMon is a network and system monitoring application based on Nagios with extended support for capacity planning, SLA, SLM, network discovery, service catalogs, report schedule, Davinci, a dashboard builder, and much more. OpMon provides a GUI for Nagios as well as full multi-language support. The license to use the opmon proprietary modules is free for 2 hosts and 20 services. OpMon comes with many open source applications like phplogcon, Nedi, ntop, nagtrap, OCSInventory, OTRS, and opcfg.
check_db2_health is a plugin for Nagios that allows you to monitor DB2 database servers. Itcan operate in several modes: measuring how long it takes to connect and log in; display the number of connected users; display percentage of synchronous reads (SRP); display the percentage of asynchronous writes; display hit ratio in Buffer Pools, or only in Data Pages or Index Pages; display the percentage of SELECT that use an index; display the number of deadlocks per second; display the number of lock requests per second that could not be satisfied; display the fraction of time which was spent waiting for locks; display used space in a database or tablespace; display free space in a tablespace (in contrast to the previous mode, you can use units (MB, GB) for the thresholds); or display used space in a database log.
check_mssql_health is a plugin for Nagios that allows you to monitor an MS SQL Server. Among the list of metrics are time to login, buffer cache hit rate, page life expectancy, full table scan rate, free space in databases, batch requests/second, and many more. Installation of the DBD::Sybase Perl module is required.
NS4300N Nagios Utils is a collection of tools for working with the Promise NS4300N NAS within the Nagios framework. The two current tools allow for monitoring the chassis and remotely shutting down the system. Future versions of this utility set will include the ability to monitor drives and volumes.
The Merlin project was initially started to create an easy way to set up distributed Nagios installations, allowing Nagios processes to exchange information directly as an alternative to the standard method using NSCA. It has also been extended with fault tolerance, the ability to store status information in a database, and other features. This allows Merlin to function as a backend for applications such as the Ninja project.