Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Disketch - Design and print custom CD, DVD or Blu Ray labels and covers with Disketch disc label software. Free to download. Quick to install, easy to use CD label maker software for PC or Mac.
Sketch - Professional digital design for Mac.
coverXP - coverXP is cover printing software that has never been so easy or so complete.
Affinity Designer - Professional creative software, exclusively for Mac.
TBS Cover Editor - Create 3D Box Shots, DVD Cases, Member Cards, CD And Book Covers In A Single Program!