BRL-CAD is a powerful constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing support for rendering and geometric analysis, path-tracing for realistic image synthesis, network distributed framebuffer support, and image and signal-processing tools.
scdbackup is a simplified CD/DVD backup program for Linux. It can back up large amounts of data on one or more media, with no special tools needed for reading the backup. It supports ISO9660 filesystems and afio archives. Its special features are automatic division of data into multiple volumes, verification of write success, incremental backups, a search and restore helper for large ISO9660 backups. CDs get written via cdrecord, wodim, cdrskin, or xorriso. DVDs and BDs get written via growisofs, cdrskin, or xorriso.
Zsh is a UNIX command interpreter (shell) which of the standard shells most resembles the Korn shell (ksh). It includes enhancements of many types, notably in the command-line editor, options for customising its behaviour, filename globbing, features to make C-shell (csh) users feel more at home and extra features drawn from tcsh.
Elektra is a universal hierarchical configuration store, similar to GConf and the Windows Registry. It allows programs to read and save their configurations with a consistent API, and allows them to be aware of other applications' configurations, leveraging easy application integration. While architecturally similar to other OS registries, Elektra does not have most of the problems found in those implementations. Elektra includes a library, an API, and commandline and GUI tools for administration tasks.
Unix Mobile Agents is a generic, flexible, easy to use mobile agent architecture implemented in a set of bash scripts. This design is made to be trivial to deploy and setup. Agents can be configured to traverse the network in sorted order, in user defined order, or as a random walk. They can also run in a repeated loop, or in a single pass through the network. Connections are made via public-key SSH authentication, and the screen utility is used to allow agents to run without requiring terminals.
flmkisofs is a very simple program for creating ISO images with the mkisofs program. It can create DVD video ISO images, Apple ISO filesystems, HFS/ISO filesystems, and El Torito or Generic bootable ISO filesystems. It fully supports versions 1 through 3 of the ISO filesystem standard, with RockRidge and Joliet extensions, and has partial UDF support.