OpenLMS is a Learning Management System (LMS) made at the Department of Geography, NTNU. The system is a fully functional LMS with support for group collaboration, file sharing, distribution of lectures, and other supporting features. It is a good tool for distributing lecture notes to groups of students, and for faciliating collaboration for groups of students and teachers.
PukiWiki ('PoohKeyWeKey' without any prolonged sounds) is a wiki implementation that works on PHP 4 and 5, outputs XHTML 1.1, has many plugins (including one for bug tracking) and skins (such as one for embedded browsers), enables English and/or UTF-8 configuration, and features case-insensitive WikiNames. The formatting rules are based on YukiWiki.
Foswiki is wiki software, supporting the editing of Web pages in an ordinary Web browser by end users. What makes Foswiki special is that it supports the embedding of active and passive macros that enhance the page content (e.g. with global or dynamic information) and allow end-users to build applications that store and process data in a structured manner.