RRD poller allows you to poll RRD files and get the current value of a given data source. Additionally, it implements some advanced checks which can use past values to decide if the current one is out of threshold or not. The main purpose of this tool is to form the interface between an existing monitoring system like BigBrother, Nagios, or Mon and a set of RRD graphs generated by some specialized data collectors like rrdcollect, Cricket, and such. Thus, you can build a very modular monitoring/trend architecture without the need of double polling.
The DBI module enables your Perl applications to access multiple database types transparently. You can connect to MySQL, MSSQL, Oracle, Informix, Sybase, ODBC, and other database systems without having to know the different underlying interfaces of each. The API defined by DBI will work on all these database types and many more. You can connect to multiple databases of different types at the same time and easily move data between them.
cerberus is a modular and robust network operator and drone monitoring service designed to protect IRC networks from common threats that plague the community. It uses a BIND9-style configuration file with a mix of Perl syntax. It includes a map module that displays a server map along with basic information, stats/protocol for core protocol support, sql, an interface to DBI, modcontrol for controlling modules in use via IRC, login, operlist for displaying a list of all operators on the network, and more. It was designed for use with pure TS6 networks such as ircd-ratbox and ircd-hybrid.