RawTherapee is a powerful, cross-platform raw photo processing system, released as Free Software (GPLv3). It is designed for developing raw files from a broad range of digital cameras and targeted at users ranging from enthusiast newcomers who wish to broaden their understanding of how digital imaging works to professional photographers.
RawTherapee provides a powerful suite of tools for you to produce amazing photos and showcase your creativity.
darktable is an open source photography workflow application and raw developer. A virtual lighttable and darkroom for photographers. 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.
The Free & Open Source Image Editor
This is the official website of the GNU Image Manipulation Program (GIMP).
Whether you are a graphic designer, photographer, illustrator, or scientist, GIMP provides you with sophisticated tools to get your job done. You can further enhance your productivity with GIMP thanks to many customization options and 3rd party plugins.
What is Inkscape?
Inkscape is a Free and open source vector graphics editor for GNU/Linux, Windows and MacOS X. It offers a rich set of features and is widely used for both artistic and technical illustrations such as cartoons, clip art, logos, typography, diagramming and flowcharting. It uses vector graphics to allow for sharp printouts and renderings at unlimited resolution and is not bound to a fixed number of pixels like raster graphics. Inkscape uses the standardized SVG file format as its main format, which is supported by many other applications including web browsers.
It can import and export various file formats, including SVG, AI, EPS, PDF, PS and PNG. It has a comprehensive feature set, a simple interface, multi-lingual support and is designed to be extensible; users can customize Inkscape’s functionality with add-ons.
Krita is a professional FREE and open source painting program. It is made by artists that want to see affordable art tools for everyone.
- concept art
- texture and matte painters
- illustrations and comics
LightZone is professional-level digital darkroom software for Windows, Mac OS X, and Linux, that includes RAW processing and editing. Rather than using layers in the way that other photo editors do, LightZone lets the user build up a stack of tools which can be rearranged, readjusted, turned off and on, and removed from the stack. It’s a completely non-destructive editor, where any of the tools can be re-adjusted or modified later — even in a different editing session. A tool stack can even be copied to a batch of photos at one time. LightZone always operates in a 16-bit linear color space with the wide gamut of ProPhoto RGB.
While many of LightZone’s tools are familiar ones, they also have shared, multiple modification possibilities built in that amplify their power and flexibility. LightZone also offers some unusual tools for tonal control — meaning brightness, contrast, shadows, highlights, etc. Some are inspired by the Zone System, and some are inspired by HDR tone-mapping. These tools put LightZone in a class by itself for working with black-and-white imagery. They’re very useful for color photos, too, especially in mixed lighting situations.
LightZone was a pioneer in selective editing using vector based regions creation. Pixels can also be selected by color and/or brightness ranges. These selection features allow users to edit only a portion of an image in a flexible system that is extremely user friendly and intuitive.
The combination of the individual tools’ inherent flexibility, the flexibility of the Tool Stack, its completely non destructive editing in a 16-bit wide gamut color space, and its intuitive GUI, make LightZone a remarkable alternative for those not entirely comfortable with other photo editing software.
Shotwell is an image organizer designed to provide personal photo management for the GNOME desktop environment. In 2010, it replaced F-Spot as the standard image tool for several GNOME-based Linux distributions.
Shotwell can import photos and videos from a digital camera directly.
Shotwell automatically groups photos and videos by date, and supports tagging. Its image editing features allow users to straighten, crop, eliminate red eye, and adjust levels and color balance. It also features an auto «enhance» option that will attempt to guess appropriate levels for the image.