http://www.rohanpall.com/mindweb.html
A member of the Personal Wikis. Inspired by William Duquette's Notebook App.
Model the web in your mind into software. Link together web research, your personal journal: any kind of information.
It saves all your content in plain text. It auto-saves your content. It automatically detects links as you type them (http urls and intra links with square brackets).
It's free and its available now. Enjoy!