XRoar is a cross-platform emulator for the Dragon 32, Dragon 64, and Tandy CoCo computers, all originally released in the early '80s. The emulator runs under Unix-like operating systems (including Mac OS X) and Windows, with older versions available for handhelds like the Nintendo DS and GP32.
Audiotap is a program for conversion between .TAP files and Commodore 64 tapes. It can read WAV files containing the sampled sound of a tape and convert them to .TAP files, and can generate WAV files to be recorded on a tape and used on a Commodore 64. It can also record .TAP files from the sound card and turn .TAP files into sound played to the sound card. It does not require custom-built cables, just plain audio cables connecting the sound card and a normal audio tape player/recorder.
QEMU is a fast processor emulator. Using dynamic translation it achieves a reasonable speed while being easy to port to new host CPUs. In its user mode emulation mode, it can launch Linux processes compiled for one CPU on another CPU. Linux system calls are converted because of endianness and 32/64 bit mismatches. In its full system emulation mode, it emulates a full system, including a processor and various peripherials.
KMD is a multi-processor debugger. It can debug with hardware boards over serial ports or with software emulators (ARM and MIPS emulators are included in the project). Using the pipe option you can debug over the network or any other communication medium. It can load many executable formats such as ELF, and display and follow the original source even from multiple source file programs. There is support for breakpoints and watchpoints which can trap on specific data (such as loading or executing specific instructions). Support for other features such as FPGA's is also available, allowing loading or any control required to drive a specific hardware device. The project uses chump to allow disassembly and line assembly. Chump also allows new architectures to be easily added without the need to recompile the system. Communication with the backend is done using two pipes/fifos using a simple set of codes. Back end communication program can be created using very little memory on the target device.
tkscript is a JIT-accelerated C-like scripting language with bindings for OpenGL, SDL, SDL_net, libpng, and zlib. A plugin SDK can be used to dynamically extend the script engine with custom C functions and C++ classes. It can be used to create portable, 3D, OpenGL-accelerated multimedia applications.
Js2mouse converts joystick events into mouse events, so the user can use his joystick/gamepad as a pointer instead of the mouse. It works with any kind of joystick (analogic or digital) and with any kind of program (XFree86, GPM, etc.). The user does not need to be root. It can emulate PS/2 and IMPS/2 protocols, and joystick keys can be assigned. Documentation is included.