title: A step-up from TiddlyWiki that is still 100% portable?
body: <p><a href="http://tiddlywiki.org/wiki/TiddlyWiki" rel="noreferrer">TiddlyWiki</a> is a great idea, brilliantly implemented.  I'm using it as a portable personal "knowledge manager," and these are the prize virtues:</p>
  
  <ol>
  <li>It travels on my USB flash memory stick and runs on any computer, regardless of operating system</li>
  <li>No software installation is needed on the computer (TiddlyWiki merely uses the Internet browser)</li>
  <li>No Internet connection is needed</li>
  <li>In terms of data retrieval functionality, it mimics a relational database (use of tags and internal links)</li>
  <li>Set up and configuration are so simple as to be almost zero. This would also mean dependencies are so minimal as to be transparent, or nearly so.</li>
  </ol>
  
  <p>Let's say I've got a million words of prose in 4,000 tiddlers (posts).  I'm still testing, but it looks like TiddlyWiki gets very slow.  </p>
  
  <p><strong>Is there an app like TiddlyWiki that keeps all the virtues I listed above, and allows more storage?</strong>  (or rather, retrieval!)</p>
  
  <p><strong>NOTE:</strong>  Separation of content and presentation would be ideal.  It's nifty that TiddlyWiki has everything in a single HTML document, but it's unhelpful in many ways.  I don't care if a directory of assorted docs is needed (SQLite, XML?), as long as it's functionally self-contained.  </p>