Zim - the outliner for Firefox which I've been working on (more here) - now has a home at zimoutliner.com. Free user accounts are now available (store upto 50 lists). Other features I've snuck into the public release:

• OPML Export
• Autosave
• Contextual navigation
• Bundles

For those of you who use lists to organize your life - whether it be with OmniOutliner, scraps of paper, stickies, text editors, notepads - I suggest trying out Zim. Signing up only takes 10 seconds (note: it only supports Firefox right now).

You can head over to the public changeblog for more information, on-going progress reports on development and your chance to submit feedback and bug reports.