I am using https://www.pixton.com for several years now to create free comic books in Ubuntu. of course that is a website and also uses flash, but I cannot find any piece of software that allows you to create comic books in Linux. I need something similar - to have a built in sent of scenes and characters that you can manipulate to make them original. I doubt there is an app for Linux to do this but is worth asking. Thanks!
EDIT: I have to mention that I know about Krita, GIMP, or Blender, but none offer what Pixton does (pre-built scenes and characters that you can easily manipulate to create original scenes super fast).
There are many programs like
But I suggest you krita.
Install it with
Here I add a useful youtube-demo:
If you have a character make use of Perspective. This makes it easy to reuse objects,...
If you want an even more professional tool use blender!
This program takes a long time to feel comfortable, but the results are amazing!
There are a lot of good tutorials you can find in the web, e.g. comic style in blender.
You can make 3d models and export it to krita. With blender you are even able to create cool movies!
This video explains how to save time by using 3d models blender.
Install it with
So, if you want to be able to reuse as much of your work as possible, and don't want to do your compositing manually, there are a few good options.
As abu_bua mentioned, blender, krita, gimp, and similar can be used to make the un-composited pictures. Blender and gimp even can handle the compositing, but the learning curve is steep.
For programmatic compositing, ImageMagick is pretty powerful and simple, it lets you caption, crop, matte, and combine images, the same way every time. For something a little fancier, OpenCV is pretty incredible, and integrates well with PIL. Together, you can join or split images, apply skew, blur, 'motion' lines, and just about anything else you can think of for compositing.
If you actually mean for creating comic books (physical paper), I highly recommend using LaTeX, it's a professional quality publishing language, capable of outputting pdfs or html.
apt-get install imagemagick python-pil libopencv-dev python3-opencv texlive-binaries