Optar is a software codec that generates 2D bar codes for data storage on paper using a black and white laser printer and scanner. It fits 200kB on an A4 page, uses Golay forward error correction codes to ensure reliability, and can also be used to store data on photographic film.
Reptool is a reporting/printing tool. It is made up of two components: libreptool, which manages source files that are the report's definition, and produces the report/printout; and greptool, which visually creates source files. It is based on glib, libxml, GTK+, cairo, pango, and libgda.
Codehost's BrightQ is a suite of Unix and Linux printing utilities that presents users and administrators with a unified user interface across a variety of popular Unix printing systems, abstracting the details of print filters and providing a powerful GUI to end users. Extended printer features are also available for select printer manufacturers. BrightQ Pro also includes remote printer monitoring, network device detection, and more.