DCC/Live is a Knoppix-based live CD that provides a virtual Linux cluster infrastructure on a single PC. One front-node and three virtual work-nodes running on User Mode Linux are booted on system startup. The queueing system and other cluster-specific services are preconfigured and work out-of-the box. This project is mainly designed for education in parallel programming. A simple tutorial on running your first MPI parallel program on DCC/Live is included on the CD.
DOSBox uses SDL to emulate the PC hardware required for running old DOS games. This includes a 386 processor, an S3/Trio video card with some tweaks to allow for older display hardware like the Tandy, a Sound Blaster Pro, the PC speaker, Tandy 3-sound, CMS/GameBlaster, Disney Sound Source, and MIDI. DOS emulation is integrated. It is possible to mount local directories as drives inside the emulator.
Dapple ][ is an emulator for the Apple ][, ][+, and //e computers (and to some extent the //c) supporting from 48-3136 K RAM, parallel ports, 2 Disk ][ drives, and a real 1.40 MB floppy drive. It is written in gcc and nasm (the nasm component is not currently source-available). It supersedes Dapple, which has many of the same features.