WIKINDX is a free bibliographic and quotations/notes management and article authoring system designed either for single use (on a variety of operating sytems) or multi-user collaborative use across the internet.
Wixi is a multi-platform wiki application for the desktop. It is written in python/wxpython and uses txt2tags to generate text to many other formats. The goal is to provide a simple wiki tool around the txt2tags document generator and also be multi-platform.