When developing applications with JSF, there is the need to display error messages back to the user, if a user submitted form contains errors, or if the processing of the data went wrong. For this request, JSF meets the <h:message/> tag.
XWiki is a growing open source wiki that can be easily used withing a corporate. It has many features that can be integrated in a wiki application with reliability for the user. XWiki is written in Java and supports a variety of datasources: MySQL, PostgreSQL, Oracle etc.