This implementation of wiki has always intrigued me. It was my introduction to a "non-linear personal notebook"

It is a self-modifying single HTML page wiki written in JavaScript

Explored in 2006, I would later commit to TheBrain in 2010 due to its 2.5D interface.

  2. MonkeyGTD (GTD)
  3. Tiddlyspace - collaborative server supportive inheritance