Another drawing editor for LaTeX with PSTricks & TikZ
jPicEdt is an extensible internationalized vector-based drawing editor for LaTeX and related packages (TikZ, PsTricks,...), written in Java. It is also a library of reusable high-level graphic primitives.
Comic book editor is easy to use software to create comics.You can make vector drawings, place them in boxes, put the boxes on pages and add some text balloons. For windows users, there is an easy installer, but the program runs also on mac and linux.