darktable is a virtual light table and darkroom for photographers. It manages your digital negatives in a database and lets you view them through a zoomable light table. Read more Killer App hot
Krita is a professional free and open source painting program. It is made by artists that want to see affordable art tools for everyone. hot
LightZone is professional-level digital darkroom software for Windows, Mac OS X, and Linux. Rather than using layers as many other photo editors do, LightZone lets the user build up a stack of tools which can be rearranged, turned off and on, and removed from the stack. It's a non-destructive editor, where any of the tools can be re-adjusted or modified later ? even in a different editing session. hot
Ardesia is a free digital sketchpad software that help you to make colored free-hand annotations with digital ink everywhere, record it and share on the network. Read more
Guetzli is a JPEG encoder that aims for excellent compression density at high visual quality. Guetzli-generated images are typically 20-30% smaller than images of equivalent quality generated by libjpeg. Guetzli generates only sequential (nonprogressive) JPEGs due to faster decompression speeds they offer.
Luminance HDR is an open source graphical user interface application that provides a workflow for HDR imaging. Read more
OpenColorIO (OCIO) is a complete color management solution geared towards motion picture production with an emphasis on visual effects and computer animation.
OpenEXR is a high dynamic-range (HDR) image file format developed by Industrial Light & Magic for use in computer imaging applications. OpenEXR is used by ILM on all motion pictures currently in production. The first movies to employ OpenEXR were Harry Potter and the Sorcerers Stone, Men in Black II, Gangs of New York, and Signs. Since then, OpenEXR has become ILM's main image file format. Read more
PhotoPrint is a utility designed to assist in the process of printing digital photographs under Linux and other UNIX-like operating systems.
PixelStruct is a tool for visualizing 3D scenes reconstructed from photographs. It uses the structure-from-motion system Bundler, which is based on the same research as Microsoft Live Labs Photosynth.
SVG Cleaner could help you to clean up your SVG files from the unnecessary data.
SVG Cleaner GUI
SVG Cleaner is the main GUI for svgcleaner. It adds support for batch files processing, parallel cleaning jobs, and SVGZ decompression and compression via 7-Zip and Zopfli.