Free Cover Software
Microsoft Windows
License: Free

UndercoverXP is a small program to easily print CD and DVD covers. It supports JPEG, GIF, PNG and BMP formats and can automatically scale front covers, back covers, front + inside, inlays, DVD Boxes, Digital Pictures and CD/DVD labels to the correct sizes. Other formats can be easily added via a graphical format editor. UnderCoverXP is written in C++ using Microsoft Visual Studio 2008 and doesn’t need a .NET framework or any other external libraries. And best of all… it’s free!
UnderCoverXP is available in 26 languages: English, Dutch, German, French, Spanish, Italian, Swedish, Finnish, Norwegian, Danish, Portugese, Polish, Macedonian, Russian, Greek, Turkish, Romanian, Hungarian, Brazilian, Chzech, Latvian, Chinese, Japanese, Catalan, Arabic and Vietnamese translations are included in the setup.
Download: http://www.undercoverxp.tk/
Apple Mac
CDCoverTool
License: Free / DonateWare
CDCoverTool is a handy tool for downloading and printing CD covers. Got some albums in MP3 format you’ve just burned for the car, and you want to print out nice CD covers including track listings, all AUTOMATICALLY? CDCoverTool can do it.
If there is already an image in the same folder as the MP3 files, then CDCoverTool will use it. If not, it will attempt to download it from the internet (usually with over 90% success rate for other than completely weird and obscure stuff). It can automatically search and download the covers for several albums at once. Drop you whole collection on it and have it download the CD covers for the whole lot!!
Once you’ve got the image, you can print out a nicely formatted CD cover, including the image on the front cover, and a nicely printed list of the track names. All WITHOUT TYPING anything. CDCoverTool uses the file name as the track name.
Download: http://www.hillmanminx.net/cdcovertool/index.html
Linux
KoverArtist
License: GPL

KoverArtist is a program for the fast creation of covers for cd/dvd cases and boxes. The main idea behind it is to be able to create decent looking covers with some mouseclicks.
The project started from my need for some decent covers for the films I record from television and then often burn on dvd for archiving.
With series I usually start with one or two dvds, and add more as more episodes are available. So the program – KoverArtist – had to be flexible enough to handle that. This also requires changing covers on the fly to use cases that can house more discs.
Download: http://www.kde-apps.org/content/show.php?content=38195