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Radical Image Optimization Tool (RIOT for short) is a free image optimizer that will let you to visually adjust compression parameters while keeping minimum filesize. It uses with a side by side (dual view) or single view interface to compare the original with the optimized image in real time and instantly see the resulting file size. It is lightweight, fast and simple to use, yet powerful for advanced users. You will be able to control compression, number of colors, metadata settings and much more, and select image format (JPG, GIF or PNG) for your output file.

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. Raw is the unprocessed capture straight from the camera’s sensor to the memory card, nothing has been altered. darktable is created for photographers, by photographers. darktable edits your images non-destructively all the way through its pipeline. Your original image is never modified!

FreeCAD is a very useful 3D CAD modeler. FreeCAD will be a general purpose 3D CAD modeler. The development is completely Open Source (GPL & LGPL License). FreeCAD is aimed directly at mechanical engineering and product design but also fits in a wider range of uses around engineering, such as architecture or other engineering specialties. FreeCAD features tools similar to Catia, SolidWorks or Solid Edge, and therefore also falls into the category of MCAD, PLM, CAx and CAE.

Chasys Draw IES is a suite of image editing applications including a layer-based image editor with animation, icon editing support and super-resolution via image stacking (Chasys Draw IES Artist), a multi-threaded image file converter (Chasys Draw IES Converter), a fast image viewer (Chasys Draw IES Viewer) and a RAW camera file processor (Chasys Draw IES raw-Photo). The whole suite is UAC aware and is designed to take advantage of multi-core processors, touch-screens and pen-input devices. Chasys Draw IES is built to adhere to three core principles, which I call the "three pillars" of Chasys Draw IES. Character: No photoshop imitations here. Performance: Fast, efficient and stable. Innovation: New techniques and out-of-the-box thinking.

View & Edit graphics file of type: jpeg, bmp, gif, tiff (multi-page), png and pcx. Save As Pdf command. Jpeg lossless rotate and crop. Works with all Windows versions from 95 up to Windows 7. EXIF is displayed and all data are kept when editing and saving images. IPTC & XMP single file / batch editing support for jpeg and tiff files. Batch Processing and CD / DVD Slideshow creation. Size optimized Email sending of image(s). It can as well play avi video files and some type of audio files. There are many tools around doing that, but the aim of this is to be a small and handy tool doing what it says.

The English version of a famous Japanese free painting and retouch software for full color graphic, with mask, layer functions. You can use your own customized brush tips and even use an image file as a brush tip to create unique effects. Its user-friendly interface is suitable for beginners as well as experts. The original Japanese Edition of Pixia was created and developed by the author, Isao Maruoka, but has also been aggressively raised by its fans, which makes this software quite unique and different from other tools. Formats supported: BMP, JPG, JPEG, TIFF, RGB, ICO, DIB, PNG, PSD, PXA, WMF, PICT, PCT, TGA, MPO.

Vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X, using the W3C standard Scalable Vector Graphics (SVG) file format. Inkscape supports many advanced SVG features (markers, clones, alpha blending, etc.) and great care is taken in designing a streamlined interface. It is very easy to edit nodes, perform complex path operations, trace bitmaps and much more. In contrast to raster (bitmap) graphics editors such as Photoshop or Gimp, Inkscape stores its graphics in a vector format. Vector graphics is a resolution-independent description of the actual shapes and objects that you see in the image. A rasterization engine uses this information to determine how to plot each line and curve at any resolution or zoom level.

Optimize and convert your graphic files/images in smaller PNG files (up to 5-30%) lossless! Full compatible with source PNG format. Convert from PNG, GIF, BMP, PNM, TIFF to smallest PNG! It uses 6 programs and selects the best result: OptiPNG, TruePNG, ECT (Efficient Compression Tool), AdvanceCOMP, PNGWolfZopfli, DeflOpt. You can enable or disable each of them. Batch processing of files (drag-n-drop). Reduce the size of your PNG files in one click without quality loss! Program optimizes your file to new one with «_optimized» name ending (source file will remain intact). Program will be especially useful for webmasters to optimize images on sites to increase places in search results.

Program which can help you convert your digital photos into art, automatically. If you want to turn a portrait, the photograph of your house or a beautiful landscape into a painting, a sketch or a drawing then look no further, FotoSketcher will do the job in just a few seconds. Thanks to FotoSketcher you can create stunning images to make original gifts for your friends or relatives. Create birthday cards, season's greetings stationery or simply print your work of art and hang it on the wall. Different styles are available: pencil sketch, pen and ink drawing, various painting renderings. You can also improve your original photo with simple tools (enhance contrast, sharpen, simplify image, increase luminosity, color saturation etc...).

Very fast image viewer supporting various formats. It also supports viewing the images in compressed ZIP, RAR, or 7z files without extraction. If an image has GPS information, the location can be viewed on Google Maps, and users can store preferred photos. Support for RAW image formats including DNG, CR2, CRW, NEF, NRW, ORF, RW2, PEF, SR2, and RAF