Info-ZIP portable compression/archiver utilities (Zip, UnZip, WiZ, etc.)
Free 32/64/16-bit multi-platform Pascal and Object Pascal compiler
A 32/64/16-bit Pascal compiler for Win32/64/CE, Linux, Mac OS X/iOS, FreeBSD, OS/2, Game Boy Advance, Nintendo NDS and DOS; semantically compatible with Delphi, Borland Pascal and Mac Pascal (partially) with extra features, e.g. operator overloading.
Versatile Commodore Emulator
VICE is an emulator collection which emulates the C64, the C64-DTV, the C128, the VIC20, practically all PET models, the PLUS4 and the CBM-II (aka C610). It runs on Unix, MS-DOS, Win32, OS/2, Acorn RISC OS, BeOS, QNX 6.x, Amiga, GP2X or Mac OS X machines.
Dos2Unix / Unix2Dos - Text file format converters
dos2unix includes utilities to convert text files with DOS or MAC line breaks to Unix line breaks and vice versa. It also includes conversion of UTF-16 to UTF-8.
Emulator of Atari 800/800XL/130XE/5200 with various extensions (1088kB RAM, stereo sound and much more) running on just about every operating system (Unix/Linux, Windows, DOS, TOS, MacOS, Workbench, WinCE...)
Hammer of Thyrion (uHexen2) is a cross-platform port of Raven Software's Hexen II source. It is based on an older linux port, Anvil of Thyrion. HoT includes countless bug fixes, improved music, sound and video modes, opengl improvements, support for many operating systems and architectures, and documentation among many others.
A MAME and MESS port with an advanced video support for Arcade Monitors, TVs, and PC Monitors. It also contains a bootable Linux LiveCD/USB, a frontend with animated MNG/MP3 snapshots, a rom manager, and recompression utilities for compressed files.
Mikmod is a module player and library supporting many formats, including mod, s3m, it, and xm. Originally a player for MS-DOS, MikMod has been ported to other platforms, such as Unix, Macintosh, BeOS, and Java(!!)
Smart BootManager is an os independent BootManager which has easy to use interface and many other features. The main goals of SBM are to be absolutely OS independent, flexible and full-featured. It has all of the features needed to boot a variety of OS.
The Bywater BASIC Interpreter (bwBASIC) implements a large superset of the ANSI Standard for Minimal BASIC (X3.60-1978) and a significant subset of the ANSI Standard for Full BASIC (X3.113-1987) in C.
A complete C++ Text User Interface (TUI) featuring windows, dialogs (buttons, check and radio boxes, input boxes, etc.), mouse support, menues, etc. It's available for various platforms and compilers.
A Sequenced Binaural Wave Generator for Linux+Windows. May be used to generate sounds that entrain the brain's waves to oscillate at selected frequencies to aid in relaxation, lucid dreaming, meditation, clear thought, out-of-body experiences + more
uCON64 is a tool to backup all kinds of video games. It supports almost every available backup unit for cartridge-based consoles and performs many other tasks like ROM hacking.
A portable version of the ARJ archiver, available for a growing number of DOS-like and UNIX-like platforms on a variety of architectures.
O2EM is an open source multi-platform Odyssey2 / Videopac+ emulator. The Odyssey2 (Videopac/Jopac in Europe) was a video game console created in the late 70s.
SNEeSe is an emulator for the Nintendo SNES console for x86 PCs. SNEeSe is written in 32-bit C, C++, and NASM x86 assembly. Project goal is to make as accurate, functional, and usable an emulation core as is reasonably possible.
A graphical web browser with an emphasis on security, performance, and portability.
FakeNES is a highly portable, Open Source NES and Famicom emulator. It runs on all modern operating systems and has an actively maintained DOS port for enthusiasts. Support for phones and other mobile platforms is under development. The majority of the project is entirely original code released under the zlib/libpng license. Contributed and third-party code is included under GNU licenses.
NetHack - Falcon's Eye enhances the classic roguelike game NetHack with isometric high-res graphics, digitized effects, symphonic music and an intuitive mouse-driven interface, yet retains all the original gameplay and features.
Iter Vehemens ad Necem (IVAN) is a graphical roguelike game, which currently runs in Windows, DOS and Linux. It features advanced bodypart and material handling, multi-colored lighting and, above all, deep gameplay.
This software boots your PC and analyse your filesystems. It displays a graphical menu for you to select which system to boot. Intended to replace LILO and Loadlin, written in C with GCC, fully real mode.
BEYE (Binary EYE) is a free, portable, advanced file viewer with built-in editor for binary, hexadecimal and disassembler modes. It contains a highlight AVR/Java/i86-AMD64/ARM-XScale/PPC-64 and other disassembler, full preview of MZ,NE,PE,ELF and other.
The FreeDOS Edlin project is the standard line editor in the FreeDOS operating system.
SETEdit is a friendly text editor. It is a text mode application with windows, buttons, mouse support, etc. The main target of the project are programmers so the editor is mainly oriented to programming.
Stripe Snoop reads the contents of a magstripes (Track 1, 2, or 3) through different hardware interfaces and not only displays the contents, but uses a CDDB-like database of card formats to try and figure out what the contents mean.