The best alternative to Concepts is Krita, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Concepts and seven of them are so hopefully you can find a suitable replacement. Other interesting alternatives to Concepts are Linwood Butterfly, Rnote, Tayasui Sketches and Paper by WeTransfer.
Free, open-source painting software designed by artists for artists. Offers customizable UI, 9 brush engines, color management, tablet support, non-destructive editing, and privacy features. Portable and available on major platforms, supporting seamless texture creation.
Butterfly is a note-taking app where your ideas come first. You can paint, add texts, and export them easily on every device. This app works on android, windows, linux, and in the web.
Rnote aims to be a simple but functional note taking application for freehand drawing or annotating pictures or documents. It eventually should be able to import / export various media file formats.
Sketches is a perfect mix of beauty, simplicity and power, a truly unique combination you won't find anywhere else.
Over 25 million people set their ideas free with Paper®, the award-winning immersive sketching app.
We believe artists deserve the best possible tools and we are determined to give it to them. The goal with Leonardo is to make the best painting application ever.
Drawy is a work-in-progress infinite whiteboard tool, which aims to be a native desktop alternative to the amazing web-based Excalidraw.
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Tayasui Sketches doesn't offer enough technique and detail as Concepts. It focuses more on the simple aesthetic side of things; the layers prove to be a big problem as well since I cannot import images like on concepts.