Open Source C++ Software for MS-DOS

System Informer is a free and open source process viewer. This multi-purpose tool will assist you with debugging, malware detection and system monitoring.

MP3Gain analyzes and losslessly adjusts mp3 files to a specified target volume. It does not simply do peak amplitude normalization. Instead, it performs statistical analysis to determine how loud the file actually sounds to the human ear.

VLC is an open source cross-platform multimedia player and framework, which plays most multimedia files, DVDs, Audio CDs, VCDs, and various streaming protocols. VLC media player is simple, fast, and powerful. It plays everything, files, discs, webcams, devices, and streams. VLC plays most codecs (MPEG-2, DivX, H.264, MKV, WebM, WMV, MP3, etc.) so no codec packs are needed. It runs on all platforms: Windows, Linux, Mac OS X, Unix, etc. And VLC is hassle free with no spyware, no ads, and no user tracking.

MMC is a commander-style media player for Windows, with native, hw accelerated video playing and translucent gui. Mpxplay is a console audio player for DOS and Win32 operating systems. x264vfw, x265vfw and xAV1vfw are video for windows encoder and decoder codecs, useful with VirtualDub.

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(!!)

IMPORTANT NEWS: UPX has moved to GitHub https://upx.github.io ========================

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.

Electronic Arts Inc. has released the source code for Command & Conquer Red Alert under the GPL V3 license below, with additional terms at the bottom. This ZIP file is the full repository snapshot and includes source code for Command & Conquer Red Alert. This release provides support to the Steam Workshop for the game. Command and Conquer: Red Alert is a classic real-time strategy (RTS) game developed by Electronic Arts, with its source code available on GitHub for archival and preservation purposes. This repository offers tools to assist with compiling and running the game on modern platforms. It supports Steam Workshop integration, and while not currently accepting contributions, the repository serves as an open-source preservation project for the game. Developers interested in restoring the game or adapting it for new environments will find helpful dependencies and build tools outlined in the repository.

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.

Small C++ derivate class to have a simpler life

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.

MultiMail is an offline mail packet reader for Unix and other systems. It currently supports the Blue Wave, QWK, OMEN, OPX and SOUP formats. It has a full screen, color user interface, built with the curses library.

RHIDE is an integrated development environment with inetgrated debugger GDB

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.

Provide access to long file names under real-mode DOS. Supported file systems: FAT12/16/32, ISO9660, Joliet. Supported operations: dir, copy, mkdir, rmdir, ren, cd, del.

XOSL is a graphical boot manager that supports multi-booting of various operating systems. Development is currently done under the XOSL2 title. Historical version download below:

A Windows-based ansi/ascii editor with unlimited multi-user capabilities.

A console/text based chess program with XBoard/CECP and UCI API, available on all major platforms. You may need a graphical chess interface to use it. Please refer to README.md in the files section for installation instructions. The last stable release is 2.1.9 and has been released on 19/08/2025. Belofte 0.2.0 till 0.9.20 (c/c++): Xboard 1 & 2 (CECP) - Linux/Unix/(Windows) Belofte 2.1.1 and up (c++11) : UCI and Xboard 2 - Linux/Windows/Mac/Android/... For access to code, please clone the git repository. Compiles and Runs on 32/64 bit on Windows, Mac, Linux, Android (ARM/x86) and Raspberry. Released under GNU v2 license. (means free to copy, free to modify, free to use, ...) Works fine with Arena/Cutechess/BanksiaGui/Winboard/Xboard/...

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.

Using the simple line-graphics available in the Turbo's "graphics.h" graphics library, create a classic, fully functional paranoid-clone with the ability to create custom scenarios, and with several variations (sizes/numbers) of balls, bricks and bats. High-scores are recorded into a text file for later perusal.

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.

A tool for modifying ATI Radeon BIOS images: chip and memory frequencies, fonts, TV output standard selection, memory timings, etc.

AdPlug is a cross-platform OPL2 audio player library. AdPlug plays music, originally composed for the AdLib (OPL2) audio board, on top of an OPL2 emulator or by using the real hardware. There are multiple player software interfaces available.

NorQualizer is a smart audio equalizer/normalizer which corrects audio files to get them all similar in terms of bandwidth and volume level. Especially useful for preparing audio CDs with files from different sources.