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The ADG library (Automatic Drawing Generation) is a set of functions focused on automating the drawing of mechanical parts. It is not a CAD system but a library providing a non-interactive canvas where you can put common CAD entities such as paths, xatches and quotes, to create your technical drawings. The final result can be displayed inside a GTK+ widget or exported to any cairo available format, such as PostScript and PDF documents or PNG and SVG images.
'Asymptote' is a script-based vector graphics language for technical drawing, inspired by MetaPost but with an improved C++-like syntax. It provides for figures the same high-quality level of typesetting that LaTeX does for scientific text. It is a programming language, not just a graphics program, so it can use the best features of both scripts and GUIs. High-level graphics commands are implemented in the language itself, so they can be tailored to specific applications. Labels and equations are typeset with LaTeX for high-quality PostScript output.
Autotrace is a program which converts bitmap images to vector images. It can import images in BMP, TGA, PNM, PPM, PGM, PBM and those supported by ImageMagick, and can output Postscript, svg, xfig, swf, pstoedit, emf, dxf, cgm, mif, p2e and sk
Azimuth is a top-down shooter adventure game where you play as a ship and explore through a large map, shooting and dodging a wide variety of enemies, solving environmental puzzles and progress through the story.
Barcode Writer in Pure Postscript (BWIPP) generates all barcode formats entirely within PostScript so that the process of converting the input data into the printed output can be performed by the printer or RIP itself. This is ideal for variable data printing (VDP) and avoids the need to re-implement the barcode generation process whenever your language needs change. Since this resource is written in PostScript and interpreted within the virtual machine of a printer it is compatible with any operating system and hardware platform.
BirdFont is a font editor which can generate fonts in SVG, EOT and TTF format.
Birdfont is a font editor which lets you create vector graphics and export TTF, EOT and SVG fonts.
Chafa is a command-line utility that converts all kinds of images, including animated GIFs, into ANSI/Unicode character output that can be displayed in a terminal. It is highly configurable, with support for alpha transparency and multiple color modes and color spaces, combining selectable ranges of Unicode characters to produce the desired output. The core functionality is provided by a C library with a public, well-documented API.
DataMelt (DMelt) is an environment for numeric computation, statistical analysis, data mining, and graphical data visualization on the Java platform. This Java multiplatform program is integrated with a number of scripting languages: Jython (Python), Groovy, JRuby, BeanShell. DMelt can be used to plot functions and data in 2D and 3D, perform statistical tests, data mining, numeric computations, function minimization, linear algebra, solving systems of linear and differential equations. Linear, non-linear and symbolic regression are also available. Neural networks and various data-manipulation methods are integrated using powerful Java API. Elements of symbolic computations using Octave/Matlab scripting are supported.
Dungeon-mode is a game engine and REPL for creating and playing multi-user dungeons written primarily in emacs lisp. While playing a game created with dungeon-mode doesn’t necessarily require Emacs authoring game environments (e.g. worlds) does, as do assigning special powers, resolving Ghod calls, Sage encounters, and Ubic -if enabled- or any other or custom events with a dm-intractable property set to a non-nil value. Dungeon Masters may specify delegation rosters to support cooperative oversight and enable teams to direct the play experience.

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