AzPainter
What is AzPainter?
AzPainter is a full color painting program for linux. It's a lightweight tool with tablet pressure support, and provides basic functions such as selection, layers, filters. you can use it for painting, image editing, or pixel art making.
Available languages: Japanese and English.
AzPainter Screenshots
AzPainter Features
Comments and Reviews
Said about AzPainter as an alternative
adrianoarajoduarte
Lightweight, very simple and powerful.
Positive comment• ago
• as an alternative to 
It is simple, light, and it has almost function that sai has.
Positive comment• ago
• as an alternative to adrianoarajoduarte
Lightweight, powerful and simple.
Positive comment• ago
• as an alternative to Tags
- Image Editor
Installing this requires that you run a few commands in Terminal, but thankfully the readme file does show a list of required packages that you should be able to install right from Terminal if you're running a distro with the right repositories. I was able to install this in Kubuntu 15.10 by grabbing those packages I was missing via Terminal, and following the installation instructions.
Once you get AzPainter installed, it's very easy to get used to and quite user-friendly. It has a set of tools and a GUI that remind me of Paint Tool Sai and Fire Alpaca on Windows. Overall, a great drawing and painting program with pressure-sensitive tablet support (Wacom, in my case). It's lighter on resources and more straightforward than GIMP, which makes it easy to just jump right into and start drawing. It can output files in PSD format, making it easy to move over to GIMP if necessary. Hopefully this will show up in the various Software Centers eventually because it's really something that all artists on Linux should try out.