Description: darktable is an open source photography workflow application and raw developer. It manages your digital negatives in a database, lets you view them through a zoomable lighttable, and enables you to develop raw images and enhance them.
Type: software
Pricing: Free
Description: Psykopaint is a free and open-source raster graphics editor for digital painting and photo editing. It has an intuitive user interface and features similar to Photoshop such as layers, masks, filters and an advanced brush engine.
Type: software
Pricing: Open Source