Snes9X is a portable, freeware Super Nintendo Entertainment System (SNES) emulator. It basically allows you to play most games designed for the SNES and Super Famicom Nintendo game systems on your PC or Workstation; they include some real gems that were only ever released in Japan. Snes9X is coded in C++, with three assembler CPU emulation cores on the i386 Linux, MS-DOS and Windows ports.
TinySID is a very small SID player. Current features include 99% 6510 CPU emulation and fat 6581 SID emulation including filters (which sound different to other players). It has nothing to do with other projects such as SIDPlay, and the 6510/6581 emulation is based on routines by Tammo Hinrichs that have been further developed.
asq is a simple frontend for MAME/emulator cabinets. It runs in a terminal window using curses, and pops up an optional screenshot window. It uses MAME/emulator keybindings so you can control your MAME cabinet using just your MAME controls. (In fact, this is where the name comes from--player 2 buttons 1, 2, and 3 are "asq".) It can also remap your games to use MAME keys. asq is meant for people who don't want to use a keyboard and have lots of games to manage.
Turing Machine (C++ Implementation) is a Turing machine simulation that is defined by a series of input files. These include a metafile containing data related to some Turing machine, a states file containing a list of initial, halting, and internal states, an alphabet file of empty, input, and internal symbols, a transition file of transition rules, and input word files, which detail the input given on a tape.
J80 is a Z80 emulator with a standard BIOS for a complete Microcomputer with working CP/M 2.2, CP/M 3.0, and one simple ZX Spectrum 48/128K emulator. The spectrum 128K version emulation is incomplete but working. The goal of this emulator is that the 'hardware' is built on-the-fly, reading the configuration from one file. This makes it very easy to add new peripherals or features.
The Machine Emulator, or tme, provides a general-purpose framework for computer emulation. The goal is to create a large library of modules, each emulating a specific computer chip, bus, board, etc. These modules offer standard interfaces that allow you to connect them together to create a whole machine emulation with a minimum of effort. It is possible to emulate a Sun 2/120 and a 3/150, both with NetBSD, and a SparcStation 2 with NetBSD or SunOS 4.1.4 (aka Solaris 1.1.2).