Recs.
Updated
GrafX2 is a bitmap program based on Amiga Deluxe Paint and Brilliance specializing in 256 color painting with a mouse. The first version was released in 1996 by Sunset Design studio and it continued being developed and released until 2001 when development was abandoned . In 2007 the code was found again by a user named PulkoMandy and development re-started until present day. It is primarily a Haiku, Linux and Windows software although it has been ported on other platforms as well.
SpecsUpdate
Pros
Pro Scriptable using Lua
GrafX2 is scriptable using the Lua language, which can be used to automate tasks and add new functionality to it. The script library features advanced color reduction and enhancement tools, palette analysis, and much more.
Pro Supports animations
The program has a basic support for animation using frames in newer versions. Graphics can be cloned and copied between frames and changed slightly.
See here how to animate with GrapfX2 https://www.youtube.com/watch?v=Gnq6zBZOqoM
Cons
Con Lack of modern features
Some modern features that are necessary to do pixel art creation for game dev work are lacking.
Recommendations
Comments
Flagged Pros + Cons
Con Ancient interface
The interface looks and feels like it came out of a 20 year old commodore amiga.