This is my first post @ donationcoder, so hello everyone! I am looking for a note-taking program that offers:

1. XP/Vista compatible window style
2. Very tiny and fast. I want it to stay in memory all the time in case I need write down something
3. Activate on hotkey, activate if a second instance of the application starts
4. Auto-hide. When drag window to edge of screen, it could scroll to dock, when mouse stayed near screen edge for a second the window will appear.
5. Delete duplicate lines. I need this function when dealing with massive URL collections.
6. Line filtering. Just like live-search, when type a few letters display lines containing these keywords, just like the result of bash command: cat xxxxx.txt | grep "keyword"
7. High-light search result. Support RegExp search if possible.
8. Support external programs. Example: View current selection with SourceInsight, provide an API/SDK if possible

The reqirements seemed strict, I just wondered if there is any similar softwares.

Please do not recommand note-organizing softwares, I am using OneNote 2007 and it feels good.