I've used the search tool and googled it, and I have yet to find a portable version of Eagle. I use Eagle quite extensively for designing schematics and PCB. A portable version of this would be invaluable to me, and probably many others. Eagle can be found here:
ftp://ftp.cadsoft.de/eagle/program/4.16r2/eagle-win-eng-4.16r2.zip
I had a go at rough housing it myself, using UPX to make the exe and dll's smaller, and removed all the files that I didn't require, but I still had a few issues with where Eagle used license keys (They write into registry). I just need a portable version of Eagle with the freeware license used.
If someone would look at this, I'll be quite happy to provide any knowledge I can towards developing a portable version of Eagle 
Thanks for your time.
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The Freeware version of EAGLE Light is copyright protected software, © 2006 CadSoft Computer GmbH, all rights reserved worldwide. No part of the executable files that come with EAGLE nor the freeware.key file that implements the Freeware license may be altered in any way. CadSoft reserves the right to decide whether to continue this Freeware program with the future versions of EAGLE."
http://www.cadsoftusa.com/freeware.htm
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