Apps similar to PaintTool SAI include Krita, which is free and open source. Other options are Adobe Photoshop, Affinity, Photopea and MyPaint. You're spoiled for choice with Digital Painting Tools like PaintTool SAI: we list more than 100 alternatives for Windows, Mac, iPad, Linux and the web.
Zen Brush is an app that allows you to easily enjoy the feeling of using an ink brush to write or to paint. It allows anyone to easily perform fluent strokes while not compromising on the fascinating texture of a real ink brush.
Japan
A free, full-featured image editor that runs entirely in your browser. Layers, masks, blend modes, adjustment layers, smart objects, text and filters — with PSD import and export, and on-device AI selection. Nothing is uploaded; your files never leave your device.
PhotoKit.com is integrated with a powerful online photo editor, smart brush, image quality enhancement, exposure repairment and image filters, splicing, cropping, transformation, painting, resizing, and can add text, shape, sticker, frame, round corners, etc.
Liquid Studio is a product born from TwistedBrush Pro Studio but with a focus on creation of individual objects with liquid paints.
United States
Photopainter is both a natural-media painting software and an image processing system at the same time.
United Kingdom
gpaint (aka GNU Paint), a small-scale painting program for GNOME, the GNU Desktop Environment. gpaint does not attempt to compete with GIMP, it is just a simple drawing package based on xpaint, along the lines of Microsoft Paint.
United States
PixelStyle Photo Editor for Mac supports easy photo-editing & graphic-designing.
United Kingdom
Paint 3D is a free, beginner-friendly 2D and 3D design app for Windows 10 and 11, originally developed by Microsoft. It lets you create 2D drawings and 3D models using brushes, shapes, stickers, textures, and a built-in 3D model library — all without needing design experience.
United States
A free, open-source desktop editor for AI inpainting: select part of a picture, describe what should be there, and the result comes back as an editable, colour-matched layer.
Germany
EU
Edit image brightness, contrast, hue, saturation, and gamma with drag-and-drop ease in-browser. No uploads, logins, or limits. Secure processing happens locally. Download finished images as PNG or JPG after real-time preview. Free, unrestricted access provided.
HeliosPaint is a freeware paint program for creating and editing images. It runs on Microsoft Windows, Mac OS X, Linux and Unix and is written in Sun Microsystem's Java programming language.
Draw is a graphics painting app to draw, color, or edit pictures. You can use Draw like a digital sketchpad to make simple pictures, creative projects, or to add text and designs to other pictures, such as those taken with your digital camera.
