GIMP delivers powerful functionalities for photo retouching, image composition, and format conversion. As a versatile tool, it serves as both a simple paint program and a high-end retouching suite, and offers batch processing for mass image tasks in an accessible open-source platform.

Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X, using the W3C standard Scalable Vector Graphics (SVG) file format.

Comprehensive raster graphics editor offering advanced photo and image editing features. Supports multiple layers, masks, alpha compositing, various color models, and has limited vector graphics, 3D, and video capabilities. Extensible via plug-ins.

Paint (formerly Paintbrush) is a simple, ultra-basic graphics painting program that is included with almost all versions of Microsoft Windows. It opens and saves files as Windows bitmap (24-bit, 256 color, 16 color, and monochrome, all with the .

Sketch is a vector-based design tool for Mac with a focus on screen design. It’s used primarily by screen designers who create websites, icons, and user interfaces for desktop and mobile devices. For beginners and industry professionals alike, Sketch’s powerful and easy-to-use...

Adobe Fireworks is a bitmap and vector graphics editor. Rapidly prototype websites and application interfaces with Adobe Fireworks CS4 software. Create and optimize images for the web more quickly and accurately than ever before with an enhanced toolset.

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.

Sumo Paint is a powerful image editor with a long-standing history as a fully capable Photoshop clone in the browser. Being designed for the browser, it's accessible on practically any system and loads much faster than most comparable desktop tools while still providing core...

You can use it to view your photographs and improve them. Showfoto is the standalone image editor of the digiKam project.

Seashore is an open source image editor for Mac OS. It features gradients, textures and anti-aliasing for both text and brush strokes. It supports multiple layers and alpha channel editing. It is based around the GIMPs technology and uses the same native file format.

PaintStar is a versatile digital image processing software suitable for such tasks as retouching of photographs, composing and authoring images, image morphing, screen capture, and displaying image thumbnail in Windows Explorer context menu.

Wizardbrush is a natural media painting software which has a lot of brushes and paper with realism style. You can create realistic picture with it. You can not only use it to paint pictures, but also handle your digital photos, even use it to teach digital painting and image...