Imre is a web application which combines features of a blog, a forum, a wiki and a version control system. It documents the development of an idea over time, and records the interplay of discussion and revision in that evolution.
Ajaqs is a Web app that organizes FAQs on a per-project basis. It is designed to be deployed under popular Web and application servers. It aims to serve two purposes: to provide engineering groups a mechanism for consolidating and preserving in-house know
The Floranta libraries provide components for building Rich Client Wikis using AJAX or Java. Floranta clients can be embedded in any webpage (even plain html) and allow users to leave notes, images, cards, etc on the pages. Eg: http://www.floranta.com