Aubit 4GL compiler is a programming language based on (and compatible with) Informix-4GL. It provides an easy way to generate screen/form based programs, since statements for handling Windows, Forms, Menus, SQL, and similar are built-in. With support for SQL statements forming an intrinsic part of the language, it's especially suitable for developing database-oriented applications. Database connectivity is provided for PostgreSQL, MySQL, Informix, and others via ODBC. It supports both ncurses (console mode) and GTK+ (GUI mode) output.
Gutenprint (formerly Gimp-Print) is a collection of printer drivers for Unix/Linux that currently supports over 1400 printers. It emphasizes quality and flexibility, offering a wide variety of options to meet most printing needs. It includes a CUPS driver, an IJS-based Ghostscript driver, Foomatic data, an enhanced Print plugin for The GIMP, and other printer maintenance utilities. It can be used equally well for fast printing of text or critical printing of high quality graphics and photographs.
Zoem is a general-purpose macro/programming language that submits text to a two-stage transformation process. Macro expansion and interpretation is followed by application of customizable character filtering rules. Zoem supports inside-out evaluation, comprehensive IO, control operators, iteration, dictionary stacks, multidimensional data storage, arithmetic expressions, regular expressions, system commands, and more.
The NetCDF package consists of a few tools to operate on NetCDF and, by utilizing the compatibility API, HDF4 files. The tools are intended to be used from shell scripts. They include a couple of simple shell wrappers over the respective NetCDF functions (ncattget and ncattput) and a more sophisticated ncget tool. The ncget tool delivers (for NetCDF) or complements (for HDF4) the functionality of the "hdp dumpsds" command. It allows a selected part of a NetCDF variable or an HDF4 scientific data set (SDS) to be extracted in either an ASCII or binary form, applying the transformation specified by the scale_factor and add_offset attributes. This tool allows one to feed the data of NetCDF variables (or HDF4 SDS) to other tools designed to operate on either ASCII (text) or raw (binary) data.
GetHT downloads PDF files from Hinduism Today, an "award winning, Macintosh-generated, full color quarterly news magazine articulating Indian spirituality for 135,000 readers around the world." It is the only native GNU/Linux client available, has good proxy support, and allows you to only download the parts of the magazine that interest you.
Arachne is program that implements Avidan and Shamir's seam carving technique for content-aware image resizing. It allows realtime, fluid image resizing using this fascinating technique. Seam carving works by removing the "boring bits" from an image, so it can change the aspect ratio of many images without changing the shape of the objects inside.
GNU Lightning is a library that generates assembly language code at run time. It is very fast, making it ideal for Just-In-Time compilers, and it abstracts over the target CPU, as it exposes to the clients a standardized RISC instruction set (inspired by the MIPS and SPARC chips).