FireAlpaca is described as 'The image editor that can be used readily and easily. We made it possible to provide the completely free download, in order for our products to be experienced by more users from all over the world. It vailable for both Mac and Windows users!' and is a popular digital painting tool in the photos & graphics category. There are more than 100 alternatives to FireAlpaca for a variety of platforms, including Windows, Mac, iPad, Linux and Web-based apps. The best FireAlpaca alternative is GIMP, which is both free and Open Source. Other great apps like FireAlpaca are Krita, Adobe Photoshop, Paint.NET and Affinity.
KRESKA.art is a free online drawing and painting app that lets you create art directly in your web browser. It offers a simple interface, diverse brushes, and unique features like auto-color tracing. You can use it to sketch and paint without any downloads or installations.
Artweaver is a simple Freeware program for creative painting, i.e. Artweaver offers you all artistic effects which you need for your work.
Flame Painter is a unique paint program that lets you create original artworks with flame brushes.
Draw, part of the Apache OpenOffice suite, is a graphics editor that gives you the tools to communicate with visuals and diagrams. With a maximum page size of 300cm by 300cm, Draw is powerful tool for posters, graphs, charts, and more.
Photoline is a professional image editor which offers creatives a mostly non-destructive workflow for 8/16/32bpc image processing and compositing in RGB, CMYK, and Lab modes.
Full vector editing, DTP features, and a HSV/HIS workflow are supported.
A powerful and unique digital art program, focusing on natural media painting, photo editing and illustrative styles.
HiPaint is a professional integrated drawing and coloring software specially designed for digital drawing creators. The intuitive and simple interface allows for easy and intelligent operation even for a newbie with a medium- or small-sized screen of a mobile device.
Pixia is a freeware bitmap graphics editor program for Windows, created by Isao Maruoka. It was originally designed for the anime/manga community but has also been used in other branches of art.
InfiniPaint is a collaborative, infinite space, infinite zoom, canvas note-taking/drawing app. Unlike many other infinite canvas apps, although there is a specific zoom-in level limit, there is no zoom-out limit (at least up until the point your computer runs out of memory).
Milton is an open source application that features an infinite canvas. It feels raster-based but internally it works with vectors. It lets you export your work at any resolution.
Poland
EU
Germany
Slovakia
United States
Japan
China
There's a free version I found online, but you can still save the images with a screen capture. Also, it's really great for making abstract art, which works well for backgrounds.