Mednafen is a portable, utilizing OpenGL and SDL, argument(command-line)-driven multi-system emulator. Mednafen has the ability to remap hotkey functions and virtual system inputs to a keyboard, a joystick, or both simultaneously. Save states are supported, as is real-time game rewinding. Screen snapshots may be taken, in the PNG file format, at the press of a button. Mednafen can record audiovisual movies in the QuickTime file format, with several different lossless codecs supported.
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Stella allows you to enjoy all of your favorite Atari 2600 games once again by emulating the 2600's hardware with software. Stella is written in C++, which allows it to be ported to other operating systems and architectures.
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openMSX is an emulator for the MSX home computer system. You can find everything you ever wanted to know about MSX. Your openMSX is running a machine named C-BIOS. It includes TCL scripting enhance openMSX with powerful scripts, system ROMs are specified and found with their SHA1 sums or file names as a fall back, automatic host to MSX keyboard mapping, and can type on any machine with any keyboard layout ...
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Yabause is a Sega Saturn emulator under GNU GPL. Yabause can boot Saturn bios and games, some of those games are playable. For installation/how to use information, check the ports specific README files.
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VICE is the one and only Versatile Commodore Emulator. It provides emulation of the Commodore C64, C64DTV, C128, VIC20, PET, PLUS4 and CBM-II computers within a single package. The emulators run as separate programs, but have the same user interface, share the same settings and support the same file formats.
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Singularity Viewer
Singularity Viewer is a Second Life protocol compatible client application. It can be used to access Second Life service as well as a number of other such as those based upon OpenSim platform. It is directly based upon source code of Ascent Viewer by Balseraph Software Group, which is in turn based upon source code released by Linden Lab, with contributions from various sources.
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MAME stands for Multiple Arcade Machine Emulator. When used in conjunction with images of the original arcade game's ROM and disk data, MAME attempts to reproduce that game as faithfully as possible on a more modern general-purpose computer. MAME can currently emulate several thousand different classic arcade video games from the late 1970s through the modern era.
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Cheat Engine
Cheat Engine is an open source tool designed to help you with modifying single player games running under window so you can make them harder or easier depending on your preference, but also contains other useful tools to help debugging games and even normal applications. It comes with a memory scanner to quickly scan for variables used within a game and allow you to change them, but it also comes with a debugger, disassembler, assembler, speedhack, trainer maker, direct 3D manipulation tools, system inspection tools and more.
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Turbo DosBox
Turbo Dos Box is a very easy and small frontend for DOSBox.
- Save/Load XMLcfg
- Categorize your games.
- Can search DosBox site / Google for your game.
- Converts long file names to short names for DOS.
- Can change all DosBox parameters via Tree Configuration Dialog.
- Can setup a 'default profile' for all new games or right clicks.
- Can right click an EXE file and run it through DosBox without configuration!! Right click and play!
- Can save .TDB files or .CONF dosbox configuration files and automatically play them.
Extract it to DOSBox directory (TDB looks for DosBox in the directory you run it), then run tdb64.exe.
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OpenTTD is an open source simulation game based upon the popular Microprose game 'Transport Tycoon Deluxe', written by Chris Sawyer. It attempts to mimic the original game as closely as possible while extending it with new features.
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ScummVM is a program which allows you to run certain classic graphical point-and-click adventure games, provided you already have their data files. The clever part about this: ScummVM just replaces the executables shipped with the games, allowing you to play them on systems for which they were never designed! ScummVM supports many adventure games, including LucasArts SCUMM games, Simon the Sorcerer 1&2 by AdventureSoft, Beneath a Steel Sky and Broken Sword 1&2 by Revolution, and many more.
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Droid Explorer
A tool to manage your rooted android device with the simplicity of Windows Explorer. Features: Multiple Device Support, Copy and auto-apply update.zip, Copy local files to device, Auto detection of connected/disconnected device, APK file icon and extended information, Device command shell window, Reboot device, Reboot device in to recovery mode, Open files for viewing / execution locally with the default file type executable, Drag & Drop file copy from Explorer, Flash Recovery Image, Package Manager (Install & Uninstall), ...
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Operating Systems

nOS is an operating system that incorporates the design of KDE into a lightweight environment that can be run on any computer. It is designed for but not restricted to be run on Netbooks, Portable Computers and Older Hardware.
- Runs on Low Memory
- Runs Straight out of the box
- Looks Great
- Is Reliable
- Really Compatable
- It's Easy to Use.
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MenuetOS is an Operating System in development for the PC written entirely in 32/64 bit assembly language. Menuet64 is released under License and Menuet32 under GPL. Menuet supports 32/64 bit x86 assembly programming for smaller, faster and less resource hungry applications. Menuet isn't based on other operating system nor has it roots within UNIX or the POSIX standards. The design goal, since the first release in year 2000, has been to remove the extra layers between different parts of an OS, which normally complicate programming and create bugs.
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AROS Research Operating System
The AROS Research Operating System is a lightweight, efficient, and flexible desktop operating system, designed to help you make the most of your computer. It's an independent, portable and free project, aiming at being compatible with AmigaOS at the API level (like Wine, unlike UAE), while improving on it in many areas. The source code is available under an open source license, which allows anyone to freely improve upon it.
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TempleOS (formerly LoseThos) is an x86_64, multi-tasking, multi-cored, public domain, open source, ring-0-only, single-address-map (identity-mapped), non-networked, PC operating system for recreational programming. TempleOS is simpler than Linux and you can have hours of fun tinkering because all memory and ports are accessible. Memory is identity-mapped at all times, so you can modify any task's memory from any other task.
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Zorin OS Free
Zorin OS is a multi-functional operating system designed specifically for Windows users who want to have easy and smooth access to Linux. It is based on Ubuntu which is the most popular Linux operating system in the world.
Zorin OS gives users more flexibility. It allows you to use Zorin OS alongside your current operating system and run Microsoft Windows programs in Zorin OS with the help of WINE and PlayOnLinux.
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Lupo PenSuite
Lupo PenSuite is a completely free suite of portable programs and games. This Suite is designed to simplify the user's life, by collecting the best suites and portable applications available on the Web. Optimized to be loaded on a USB flash drive and brought always with you, this Suite works perfectly well on any other device. It includes over 160 highly selected portable programs and games (7-Zip, Audacity, CCleaner, eMule, FileZilla, Firefox, GIMP, Instantbird, IrfanView, Notepad++, Opera, SumatraPDF, Thunderbird, µTorrent, VLC and many more).
Download Lupo PenSuite [additional package for 64bit systems]