Necessitas is an Eclipse plug-in that adds a class-path container to manage a projects jars using the ivy dependency manager. It gives you all of the advantages of ivy without leaving Eclipse. It will download the jars your project depends on and add them to your projects classpath. You can optionally have it automatically update your classpath whenever a change is made to the ivy module.
Tomcat Status Widget is a dashboard widget for monitoring the status of applications deployed to a Tomcat server container. It shows a list of the currently deployed Web applications and their status. It allows easy monitoring of the number of active sessions, as well as a quick method of restarting specific applications.
NagiosAppender is a pure Java implementation of a Log4j appender that allows the developer/administrator to send log records to Nagios via the NCSA server (using the push model). It provides a simple solution for Nagios administrators whose only alternative is to implement a polling function against against the output of a standard Log4j appender. The log4j configuration file provides for user-specific mappings between Log4j levels and Nagios levels. The configuration file also allows the user to select whether to set the Nagios 'service' and 'host' programmatically via Log4j MDC, or via the config file. Later releases support XOR encryption.