The most popular alternative is GIMP, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to QAquarelle so hopefully you can find a suitable replacement. Other interesting QAquarelle alternatives are Krita (Free, Open Source), MyPaint (Free, Open Source), Autodesk SketchBook (Freemium) and Clip Studio Paint (Paid).
- GIMP is a free program for such photo retouching, image composition and image authoring. Essentially it's the closest thing to Photoshop you can get for free.
- Krita is a professional Free and open source (FOSS) painting program. It is made by artists that want to see affordable art tools for everyone withith concept art, texture and matte painters, illustrations and comics.
- MyPaint is a fast, distraction-free, and easy painting tool for digital artists. It supports graphics tablets made by Wacom, and many similar devices.
- Drawing software featuring an unobtrusive user interface and a powerful drawing engine.
- Clip Studio Paint, previously Manga Studio or ComicStudio in Japan, is a family of software applications for Mac OS X and Microsoft Windows used for the digital creation of comics...
- Paint (formerly Paintbrush) is a simple, ultra-basic graphics painting program that is included with almost all versions of Microsoft Windows.
- PaintTool SAI is high quality and lightweight painting software, fully digitizer support, amazing anti-aliased paintings, provide easy and stable operation, this software make...
- Glimpse is an open source image editor based on the GNU Image Manipulation Program. The goal is to experiment with new ideas and expand the use of free software.
- Corel Painter is a raster-based digital art application created to simulate as accurately as possible the appearance and behavior of traditional media associated with drawing...
- Sketches is a perfect mix of beauty, simplicity and power, a truly unique combination you won't find anywhere else.