Zim Wiki - Zim is a graphical text editor used to maintain a collection of wiki pages. Each page can contain links to other pages, simple formatting and images.
ConnectedText - ConnectedText is a powerful but simple information management system.
TiddlyWiki - a non-linear personal web notebook
Wiki on a Stick - Self-contained desktop wiki
wikidPad - wikidPad is an application for storing thoughts, ideas, todo lists, contacts, or anything else that user can think of to write down.
Ultra Recall - "Ultra Recall is personal information, knowledge, and document organizer software for...