http://deluge-torrent.org/
License: GPL
![Image](http://i.imgur.com/51msw5z.png)
How to extract: Download the installer and extract to a folder of your choice. delete the "$PLUGINSDIR" folder and move the files and folders inside "$_OUTDIR" to the root (.exe) folder
Launch deluge.exe with "-c data" (replace "data" with whatever you wanna name the folder) parameter so that it saves settings inside the program folder
Used regshot to test and it seems to be pretty much stealth
Added here:
http://www.portablefreeware.com/index.php?id=2537