rioutil is a utility designed for the use of interfacing with Sonic Blue/dnna's third, fourth, and fifth generations of flash MP3 players (Rio 600/800/900/S-Series/Riot/Cali/Chiba/Fuse and Nike psa[play). On many players, it goes beyond the packaged software by providing downloading.
rlimit is a program that lets you run processes with system resource limits set. It can be used by software developers and testers to test that software will run correctly in resource restricted environments. It is also useful for software which would otherwise consume excessive resources such as programs that used 100% CPU, set their own priority levels, or consume too much memory. This is basically a command line interface to the system functions getrlimit() and setrlimit().
rsyncbackup is a handy tool for scheduled backups using rsync. rsyncbackup lets you easily setup multiple source folders and destinations, both locally, on your iPod or external firewire disk, or at a remote destination using ssh. rsyncbackup has no GUI, but is based on editing configuration files. The script is meant to be run in a crontab, so user interaction is not neccesary. Basic terminal skills are required to use the program.
The rt-stepper project provides a USB CNC controller solution. Most CNC controllers are designed to be driven with a PC parallel port. The rt-stepper solution replaces the parallel port with USB. Users can convert their existing parallel port CNC controller into a USB CNC controller. Designers can integrate the hardware into there own CNC controller. The PC side software is based on the popular EMC2 software at www.linuxcnc.org. EMC2 provides 4-axis support, a complete gcode interpreter, a trajectory planner, a GUI front-end, backplotting, and more. The best part of the solution is since the rt-stepper hardware provides the real time step pulses, you can now run EMC2 on Linux, Mac OS, and Windows.