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Asymptote '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 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

EPiX 'ePiX', a collection of batch programs, creates mathematically accurate fgures, plots, and animations containing LaTeX typography. The input syntac is easy to learn. The output -- vector image files or LaTeX picture-like environments -- is expressly designed for use with LaTeX.

GSEGrafix GSEGrafix is a GNOME application which uses an anti-aliased GNOME canvas for creating scientific and engineering plots. The program is written in C and reads ASCII plot-parameter files and data files. The plot-parameter files contain keywords and corresponding arguments for specifying plot parameters (such as data file names, data file formats, plot type, plot style, axis type, axis labels, etc). GSEGrafix can make rectangular two-dimensional plots (with linear, semilog, or loglog axes), histograms, polar-axis plots, and three-dimensional plots (with linear axes). Three-dimensional plots include points, contour, color, and mesh plots. Data for three-dimensional plots can also be used to create two-dimensional plots using contour lines or color to represent values of a third variable.

Gestalter Gestalter is a free vector drawing program. Its central element, the Bezier curve, is used as a base part for almost every other object. Complex paths are possible, compound paths can be constructed, grouping of elements is enabled, and everything can be screened by a mask. Adding and deleting of nodes is implemented as well as transformations (translation, rotation, scaling, and skewing).

JPIV: Java Particle Image Velocimetry JPIV is a platform independent, graphical stand-alone application for Particle Image Velocimetry (PIV). PIV is an optical technique for measuring fluid flow velocities. JPIV can be used for multi-pass PIV evaluation, sum of correlation ensemble evaluation, single pixel ensemble evaluation, vector field filtering, calculation of vorticity and other derivatives, third velocity component reconstruction, image and vector field display, vector field statistics and batch processing.

Pencil Pencil is intended to be a simple program enabling anyone to make 2D animation. It lets you create traditional hand-drawn animation (cartoon) using both bitmap and vector graphics.

Sketch Sketch is a vector drawing program written almost completely in Python for flexibilty (with some modules written in C for speed). Sketch supports some interesting features like gradient fills, clipmasks, text along a path or blend groups and bezier curves. All affine transformations are possible. It has plugins that import or export from different formats, and that can be used a way to define new graphics objects. This package was formerly known as 'sketch.'

Sodipodi Sodipodi is a general purpose vector drawing application which uses a subset of W3C SVG (full compliance is currently in the works) as its file format. Drawing tools include rectangles, ellipses, freehand drawing, text objects, imported bitmaps, fills, and outlines. The user interface is similar drawing programs. There are rectangles, ellipses, text items, bitmap images and freehand curves. Additionally, both vector and bitmap objects can have alpha transparency and can be arbitrarily transformed. Sodipodi supports multiple opened files and multiple views per file and prints and exports to png bitmaps.

Synfig Studio Synfig is a powerful, industrial-strength vector-based 2D animation software package, designed from the ground-up for producing feature-film quality 2D animation with fewer people and resources.

Xfig Facility for Interactive Generation of figures under X11 is a menu-driven tool that lets users draw and manipulate objects interactively in a X window. The resulting pictures can be saved, printed on PostScript printers or converted to a variety of other formats (eg to allow inclusion in LaTeX documents).