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Phototonic is a fast and functional image viewer and organizer, inspired by the traditional image viewer design (i.e. thumbnails and viewer layouts).

ppsei (PPS Extract Images) is a simple command line program, which tries to extract images from Microsoft PowerPoint documents (PPS/PPT).

projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL. All projectM requires is a video card with 3D acceleration and your favorite music.

The paint module provides a simple and flexible facility for painting PNG images files. The paint module depends upon three free libraries: freetype, libart, libpng.

sk1libs is a set of python libs for sK1 Project. The package includes multiplatform non-GUI extensions which are usually native extensions.

The Geokit gem provides: - Distance calculations between two points on the earth. Calculate the distance in miles, kilometers, meters, or nautical miles, with all the trigonometry abstracted away by Geokit. - Geocoding from multiple providers. It supports Google, Yahoo, Geocoder.us, and Geocoder.ca geocoders, and others. It provides a uniform response structure from all of them. It also provides a fail-over mechanism, in case your input fails to geocode in one service. - Rectangular bounds calculations: is a point within a given rectangular bounds? - Heading and midpoint calculations

The Gruff Graphing Library is a project to make beautiful graphs with Ruby. Can be used alone or with Ruby on Rails.

This modules provides an interface to layout and generate images of directed graphs in a variety of formats (PostScript, PNG, etc.) using GraphViz.

This is a low level console graphics library, originally based on VGAlib 1.2 by Tommy Frandsen. VGAlib supported a number of standard VGA graphics modes, as well as high resolution/high color modes found on many popular graphics adapters. As of now, support for many more chipsets had been added. It supports transparent virtual console switching, that is, you can switch consoles to and from text and graphics mode consoles using Alt-[Function Key]. Also, SVGAlib corrects most of VGAlib's textmode corruption behavior by catching SIGSEGV, SIGFPE, SIGILL, and other fatal signals and ensuring that a program is running in the currently visible virtual console before setting a graphics mode.

OCRopus(tm) is a state-of-the-art document analysis and OCR system, featuring pluggable layout analysis, pluggable character recognition, statistical natural language modeling, and multi-lingual capabilities.