Artweaver Free lets you paint creatively with the help of a vast range of painting tools so you can create sketches from photos or experiment with colors.
Artweaver Free offers layers, group layers, and support for the PSD file format for professional users. It is also possible to load and run Photoshop-compatible filters.
It is available in two versions: The Free version and a Plus version (shareware), which has more features than the free version. You can try Plus for 14 days without restrictions before deciding to purchase.