Siag Office is a free office package which consists of the spreadsheet Siag, the word processor PW, the animation program Egon, the text editor XedPlus, the file manager Xfiler and the previewer Gvu. Siag is easy to use, yet infinitely flexible through multiple embedded interpreters and a plugin mechanism that allows other programs to run inside the main document. The supported interpreters are SIOD, Guile, Tcl, and Python.
tgif is a vector-based drawing tool, with the additional benefit of being sort of a web-browser. That is, you can fetch drawings from a web server with it, and you can make objects in your picture into hotlinks to other parts of the drawing, or to other drawings accessible via HTTP.
Web Photo Album automatically generates photo albums on the fly from directories containing your favorite photos. Supports captions (including HTML tags), definable page sizes, forward and reverse preview, and index pages. All preview and index pages can be clicked to jump straight to the page that contains them. Album maintenance is easy -- just add or remove photos and (optionally) captions to your album directory.
yplot is an interface to the PLPlot plotting library written as an extension of yorick. This combination allows one to quickly and easily create high-quality scientific plots from data, even in large structured files. yplot implements 2D line and scatter plots, contour plots, 3D surface, mesh and scatter and line plots. The user is given full control over every aspect of the plot, including symbol types, line types, label placement, fonts, etc. The results can therefore be made suitable for high-quality scientific presentation. A 60 page Postscript tutorial is included with examples and a reference section.
The Montage FR-1 slide printer driver allows you to use a Lasergraphics Montage FR-1 slide printer attached to your Linux box via the generic SCSI interface. The core program takes a PPM file as input and causes the printer to expose a slide with that image. Additional scripts are provided to embed the core program into the BSD printing system. This allows you to expose any PostScript file, and to actually print to your slide printer.
JpGraph is an OO graph drawing library for PHP 5.1 and above. Highlights of the available features are: multiple scale types; anti-aliasing of lines; color-gradient fills; support for GIF, JPEG, and PNG formats; and support for multiple Y axes. Many plot types are supported, such as pie-charts, lineplots, bar plots, impulse plots, polar plots, error plots, contour plots, matrix plots, gantt charts, and many more. The pro-version also contains extensive 1D and 2D barcode support. The documentation is extensive and is over 700 pages.
MDVI is a library and a previewer for DVI files with the output format of TeX. The previewer runs on the X Window System, but the library can be used in any environment, and supports fonts in PK, VF, GF, Type1 and TrueType formats, and font metric files in TFM, OFM and AFM formats.