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sz81 is a Sinclair ZX80/ZX81 emulator very much based upon the work of Ian Collier's xz80 and Russell Marks's z81 but employing the highly portable SDL and including additional functionality and features for desktop computers and portable devices.
Dioscuri is an x86 computer hardware emulator written in Java. It is designed by the digital preservation community to make sure that documents and programs from the past can still be accessed in the future. Dioscuri is durable and component-based.
retrobox aims to emulate MOS 6502 CPU based devices such as the Commodore 64, Atari 2600, Apple II, and original Nintendo Entertainment System.
Currently, MOS 6502 CPU emulation is fully implemented and effort is now directed towards the emulation of graphics processors (GPUs/PPUs).
WebCPC is an Amstrad CPC emulator especially for web-useage.
It is based on JEMU (Richard Wilson) and JavaCPC (My main project).
This small applet is not signed and easy to use. It emulates 3 CPC models: 464, 664 and 6128.
Java-based instruction level emulator of MSP430. Code on github.
A Java-based instruction level emulator of the MSP430 series microprocessor and emulation of some sensor networking platforms. Supports loading of IHEX and ELF firmware files, and has some tools for monitoring stack, setting breakpoints, and profiling.
Note that the latest code now resides at github.
Castadiva is a test bed based on low-cost off-the-shelf devices, which is used to test protocols developed for MANETs. Castadiva is completely compatible with the file format used by the ns-2 simulator.
KCemu is an emulator for the KC85 homecomputer series and other Z80 based microcomputers like Z1013, LC80, Polycomputer 880 and BIC A5105. The emulation supports a number of additional hardware, e.g. floppy disk drives and extended graphic modules.
The original computer video game, SpaceWar!, implemented on a DEC PDP-1 emulator. Written in C++ using wxWidgets, this program runs PDP-1 object code from the original 1962 game. Based upon the Java version that had been available from MIT
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Linux Launcher Portable is an computer emulator done by duhowpi, with my contribution. Based on WGet, QEmu, UnZip y CD2USB. Known Bugs : On .exe compiled with Autohotkey, icons of launcher may be unavailable on XP or earlier...
JSGB is a Nintendo GameBoy emulator. Written in JavaScript and HTML5. Integrates a debugger with breakpoints support, memory, viewer and more... You can test it here: www.codebase.es/jsgb/?v=0.02
This is Sharp X680x0's Human-68k command-line emulator.
It's run on Windows and BSD/Linux without X680x0's ROM Image and Human68k Operating System Files.
It can run a X680x0's character based program without sounds(except Beeps).
For new versions, check https://github.com/Darkkey/javaNetSim
javaNetSim (Java Network Simulator) - it's a fork of a project jFirewallSim. The main goal of javaNetSim is creating a software to simulate various TCP/IP networks based on Ethernet, WiFi, PPP, etc...
Open QEMU Manager is a web manager running on Linux. With Open QEMU Manager you can configure, admin and run one or more qemu instance on the target host. Different user and admin menues permit easily to sell Virtual Private Servers (VPS) based on QEMU.
Storesim simulates creation of large amount of random files. Directory structure created is similar to what is done in very large file repositories: based on hashdirs (found in mailservers, NFS servers, files servers, image databases...)
JStella is a Java-based Atari 2600 VCS emulator. It allows one to play old Atari 2600 games in an operating system independent manner. It also supports web page based applets. Its emulation core is based on Stella-Atari 2600 Emulator.
SnareJ is a Java-based system that might run some old RISC OS programs. Support for the various modules and APIs is thin at the moment, but some [simple] programs will work.