WebMon is a Java VM monitoring tool. It can be deployed to any servlet container or embedded in your EAR, or in JavaSE applications. RSS, e-mail, and Jabber notifications of potential problems are sent. It is useful if you aren't able to use traditional tools such as JConsole or VisualVM.
GWiki is an embeddable Wiki engine. It allows users to edit rich text fragments in an application you develop. It supports I18N files and mulitimedia content. Gwiki can be extended with macros written in Java or Groovy. It has a powerful right and role system, which can be fed from external sources such as LDAP, and allows access to business entitiels from wiki pages. It comes with Wicket integration out-of-the-box. Wicket-HTML-Fragments can be held within GWiki, so these pages can be managed by the Wiki System, while Wicket handles the application logic. GWiki can be deployed as a servlet on every servlet container. GWiki can use a filesystem, a Zip archive, or a database for its content storage.
ProjectForge is a Web-based solution for project management including time sheet booking, Gantt charts, financial administration and controlling, issue management, and managing work-break-down structures. First-party and third-party plugins are supported. Ready-to-run packages of the ProjectForge server are available for Windows, Mac OS X, and all Java6-capable platforms (database and Web server are included). ProjectForge is also available as a web-archive file (war) for usage within your own Web server and for your own database installation.