I didn't see this listed. http://www.gcstar.org/

Here's what is can manage:

* Movies
* Video games
* Books
* Music
* Numismatic
* Wines
* Board games
* Comic books
* TV shows episodes
* User defined collections

I know some people don't like GTK apps, but everything is included, no screwing around with external addons.
Here's a link discussing the portable nature of it, the author's response is at the end. http://forums.gcstar.org/viewtopic.php?id=738

The executable just unpacks the files to a folder of your choice. Also Uniextract can unpack it.

So far I'm using it and like it, hope someone else finds it useful.

This program is still being developed, is cross-platform, and open source. Unfortunately the Windows version is a little behind and there's no indication its portable.

http://wiki.gcstar.org/en/install_windows

Screencap:

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Nobody looks at Winpenpack?
http://www.winpenpack.com/en/download.php?view.1290

GCstar 1.7.0‏ personal collection manager is available.

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