Verlof is a Web application for registering and viewing leave information. It records hours of leave rights and hours of leave within categories like normal leave, special leave, reduced working-hours (ADV), and the begin and end dates for the leave's period. The few rules imposed on the entries are mainly sanity checks like "begin date is in the weekend". The act of entering a new leave entry sends an email to the group manager and a copy to the employee. The advantages of this electronic version over the paper version are: there is a single information location (no employee-card and mother-card discrepancies), questionable entries immediately draw the manager's attention (with email), and various up-to-date views of the leave history are available (total, year, and list). Verlof is a Dutch-only application and a little specific to Leiden University.
Very Quick Wiki is a JSP/Servlet WikiWiki Web clone. It is installed by dropping a single WAR into Tomcat, Resin, etc. It features built-in filesystem or MySQL backend, email notification, diff, usernames, file upload /attachment, admin/topic-locking, recent changes, search engine, standard Wiki markup, and optional HTML support.
Voisin is a social networking and group collaboration platform. It's a complete Enterprise 2.0 solution that combines all of the technologies you need to implement Enterprise 2.0 best practices in order to help your work force realize the full benefit of social collaboration and knowledge sharing as they work to achieve group goals. It is based on the OpenEdit Framework.
WackoWiki is a small, lightweight, handy, expandable Wiki clone. Its main advantages are a visual (WYSIWYG) editor, an easy installer, full Russian support, many localizations, email notification on changes/comments, several cache levels, design themes (skins) support, XHTML compliance, page rights (ACLs), and page comments.
Webical is a Web application to view and edit multiple iCalendars. Its features include progressive enhancement, a plugin framework that can be used to enhance the GUI and the back end providers, pluggable authentication, and i18n. Dutch and English localizations are provided, and adding more locales is easy. You need a servlet container, such as Apache Tomcat, to run it.
Wikidbase is a powerful and highly flexible combination of two structural extremes of data management systems: a wiki and a database. As such, it has all of the flexibility of a wiki (e.g. any kind of unstructured data can be stored) and the structural data capabilities of a database (e.g. data may be modelled similarly to database fields, tables, and relations, such that structural reports can me made of that data). The functionality is combined in such a way that this general-purpose data management system may be shaped easily, without the need of a database expert, into a custom data management application such as a contact relation management (CRM) system, a knowledge base, a shared calendar system, a project management system, etc.