title: which open source project is most like Google Notebook?
body: <p>As we knew, Google <a href="http://googlenotebookblog.blogspot.com/2009/01/stopping-development-on-google-notebook.html" rel="nofollow noreferrer">stopped</a> the development of Google Notebook. Though lots of alternatives exist, no one satisfies me (see below for the reasons). Many suggest Google to open source it, but Google didn't response by so far. So I'd like to turn to open source world to develop one. In a nutshell, Google Notebook attracts me in the following ways:</p>
  
  <ol>
  <li><p>Every notes of a certain notebook present in the form of "list" intuitively. Notes can be <em>dragged to rearrange</em> and organized into <em>Sections</em>, meanwhile notes and sections can be <em>collapsed</em> and <em>expanded</em> easily. To the best of my knowledge, no other note taking software or web service functions like that.</p></li>
  <li><p>Need to begin a new note? Just move the mouse cursor to any "blank strip" between two notes and click--a new note will emerge there, waiting for your edition, or you can change it into Section freely. <em>No need for the stupid "New Note" button or anything of the kind, and you can always make your new note in the exact place you want.</em> That's the best part that Google Notebook offers, and that I'd like to seek for in the world of existed open source projects. </p></li>
  </ol>
  
  <p>Well, these are the most valuable things I'd like to have in my new note taking software. Please tell me which open source projects I should learn for, whether web-based (e.g. PHP projects) or executable software (cross-platform is better) will be OK. Thanks very much.</p>