Interesting DOS programs

New/Updated Links (updated February 10 2023)

DOjS 1.10.0 a Javascript coding environment for DOS featuring integrated editor, graphics and sound output, mouse/keyboard support
DOStodon a Mastodon client for DOS which relies on DOjS to run
Packet Drivers Collection for DOS a collection of DOS drivers and utilities for various network cards

SHSUCDX v3.09 MSCDEX replacement ; uses only 6K resident ; can be unloaded. Now part of SHSUCD, a suite of programs dealing with the CD-ROM. Older versions here
ZeroFill 1.09 Writes zeros on the empty disk space for the selected hard drive
Image v3.57 Disk image backup and restore program. Supports FAT, FAT32, NTFS partitions and most writable USB, IEE1394 drives, ATAPI CD/DVD drives without special drivers. Shareware
HWiNFO v6.22 system information utility designed for detection of hardware. Last updated October 2022!
The Costa GUI v1.7.0 a DOS GUI with built in theme and icon editor and several apps (calculator, text viewer, games). Last updated January 2023
MinEd 2022.27 Text editor with extensive Unicode support
UPX v4.02 powerful GPL'ed executable packer (meaning the compressed executable files can still be run directly)
Links Web Browser 2.28 Open Source text web browser
PPWIZARD 22.148 Free, multi-platform HTML Preprocessor. Requires free Regina REXX interpreter. I use this to generate this site
Regina v3.9.5 a REXX interpreter that has been ported to DOS and other OSes
MGRX 1.4.1 MGRX is a 2D graphics library derived from the GRX library
DOSBox-X 2022.12.16 open source DOS x86 emulator for Windows, Linux. MacOS to run DOS applications and games
mTCP 2022-07-01 a TCP/IP stack with several applications (DHCP client, FTP client, ping, HTGet, FTP Server, HTTP server, Telnet and more). Updated July 2022

New/Updated Links (updated March 13 2022)

MGRX 1.3.5 MGRX is a 2D graphics library derived from the GRX library

FreeDOS v1.3 A GNU GPLed version of DOS. Also has lots of DOS-related news.
DOSBox-X 0.83.23 open source DOS x86 emulator for Windows, Linux. MacOS to run DOS applications and games
Free Pascal v3.2.2 32 bit compiler for DOS, Linux, Win32 and other platforms. Semantically equivalent to TP 7.0
Arachne v1.99 GPL updated GPL version of Arachne (last update Dec 23, 2021), a graphical DOS Internet suite (web browser, FTP, Email).
Links Web Browser 2.25 Open Source text web browser
SvarDOS Build 20220302 FreeDOS based OS which aims to collect vailable DOS software, package it and make it easy to find and install applications using a network-enabled package manager
The Costa GUI v1.5.0 a DOS GUI with built in theme and icon editor and several apps (calculator, text viewer, games). Last updated December 2021
DOSMid 0.9.6 DOSMid is a text mode MIDI and MUS player for DOS that can run on a 8086 CPU
Mpxplay v1.66 MP3,OGG,WAV,AAC,FLAC, WMA, MPC,AC3 player with integrated file browser, spectrum analyser and other features.
UMBPCI V3.90 Free hardware UMB driver (only 240 bytes) for DOS/Win9x - replaces EMM386.EXE
HWiNFO v6.20 system information utility designed for detection of hardware. Last updated December 2021!
Image v3.50 Disk image backup and restore program. Supports FAT, FAT32, NTFS partitions and most writable USB, IEE1394 drives, ATAPI CD/DVD drives without special drivers. Shareware
DOSLFN 0.41d TSR to provide long filename API in plain DOS. Only 12K resident. Older versions here
WCD 6.0.4 Wherever Change Directory allows you to change to any directory by typing part of a directory name

New/Updated Links (updated March 6 2021)

SvarDOS FreeDOS based OS which aims to collect vailable DOS software, package it and make it easy to find and install applications using a network-enabled package manager
The Costa GUI v1.3.0 a DOS GUI with built in theme and icon editor and several apps (calculator, text viewer, games). Last updated October 2020
DOS port of Lynx 2.9.0dev5 DJGPP port of Lynx browser. Supports IDN and access to https websites.
DOSBox-X 0.83.11 open source DOS x86 emulator for Windows, Linux. MacOS to run DOS applications and games

SHSUCDX v3.08 MSCDEX replacement ; uses only 6K resident ; can be unloaded. Now part of SHSUCD, a suite of programs dealing with the CD-ROM. Older versions here
Image v3.42 Disk image backup and restore program. Supports FAT, FAT32, NTFS partitions and most writable USB, IEE1394 drives, ATAPI CD/DVD drives without special drivers. Shareware
DOSLynx v0.44b another port of text based Lynx browser with built in TCP/IP stack ; supports https
mTCP 2020-03-07 a TCP/IP stack with several applications (DHCP client, FTP client, ping, HTGet, FTP Server, HTTP server, Telnet and more)
Mpxplay v1.65 MP3,OGG,WAV,AAC,FLAC, WMA, MPC,AC3 player with integrated file browser, spectrum analyser and other features.
Free FDISK v1.3.4 GNU hard disk partitioning utility. Supports FAT16/FAT32 and non DOS partitions
UPX v3.96 powerful GPL'ed executable packer (meaning the compressed executable files can still be run directly)
Free Pascal v3.2.0 32 bit compiler for DOS, Linux, Win32 and other platforms. Semantically equivalent to TP 7.0
V8Power Tools for DOS v20.08.06-0 variety of tools to use in your batch files
NewBasic v00.97.91 an x86 Assembler/Disassembler for DOS
DOSBox 0.74-3 open source DOS x86 emulator for Windows, Linux to (primarily) play DOS games

Sound Programs (includes audio CD players)

Mpxplay v1.66 MP3,OGG,WAV,AAC,FLAC, WMA, MPC,AC3 player with integrated file browser, spectrum analyser and other features.
QuickView Pro v2.61 Plays MP3,WAV,OGG and view other graphic and video formats.
OpenCP v2.60pre6 DOS music player (MP3, MIDI, MOD, WAV, CD-audio) with spectrum analyser and other features. GPL
DAMP v0.97 WIP 8 Free MP3 Player. Displays synchronised graphics when playing MP3 files. Source code available
XTCPlay v0.97c Graphical audio player of MP3, WAV, S3M, MOD and more from the demo group Sanction.
DOSAMP v0.8 DOSAMP is a freeware command-line MP3 player.

MPR 10/04/10 Small, minimalist DOS MP3 player (33K exe)
JukeMp3 beta Mp3/Mp2/Xm/Mod/S3m/CD-DA DOS player that tries to emulate a turntable.
DSS v3.-1 MP3/WAV player/recorder with several display modes during playback. Also supports PC speaker!

BladeEnc v0.941 DOS port of BladeEnc command line MP3 encoder; create MP3 files from WAV files.
LAME v3.92 DOS port of LAME, a GPL'd WAV to MP3 encoder. Encodes faster than real time on a PII 266.
AudioCVD v1.20 WAV to OGG (open-source replacement for MP3) converter
CD2WAV v1.0i Read audio CD tracks directly to WAV files
ID3TOOLS edit ID Tags of MP3s and list files with ID Tag info. Source code available.

DOSMid 0.9.6 DOSMid is a text mode MIDI and MUS player for DOS that can run on a 8086 CPU
MIDIer 2.50 DOS based MIDI and RMI player that works with all versions of the Sound Blaster card. Source code available
Megamid v1.66 Graphical MIDI Player for DOS. Also supports playing of Karaoke MIDI files
GSPLAY v1.1 A freeware MIDI player. Can also play Karaoke MIDI files.
Midget v2.03 DOS-based MIDI composer ; works with wavetable sound cards or internal speaker.

CDPlayer v2.25e Audio CD player which looks like the Win95 CD Player. Source code included.
SJGPlay v1.29 Easy to use freeware Audio CD Player with Lyrics and playlist for each CD.
CDPTSR v0.12 CDPTSR is a memory resident CD Player; uses only 3.5K resident

Graphics_Programs/Screensavers

QuickView Pro v2.61 Plays MP4(!), AVI (incl DivX), MPG, MOV (Quicktime), MP3, WAV, OGG and view other graphic formats.
NConvert v6.88 command line batch image processor with more than 80 commands and compatible with 500 image formats.
PictureViewer 1.94 PictureViewer can view and convert many graphic formats. Freeware
SEA v1.3 This shareware viewer/converter/image manipulator has an easy to use GUI
LXPIC v7.3 Small (size of exe :20K!) yet powerful viewer of JPG, GIF, PCX, CAM and others
MPEGone v1.10 DOS MPEG and VideoCD player
DVD4DOS Beta 1 non-realtime playback of DVD movies

Pixel 1.0 Beta 5 build 481 Impressive shareware Photoshop-style graphics editor (supports layers, channels, Truetype fonts, etc).
Neopaint v3.2d a shareware image editing and painting program.
VGA Paint 386 opensource painting program

Acidwarp Fractal generator which can be used as a screensaver.
DeciMatrix Matrix like screensaver
Sanction 4K demos Several impressive 4K demos (one is a Descent type engine) by the demo group Sanction
Christmas Card 1998 Very good multimedia xmas card. Add your text and send it to friends.

Utilities

Cute Mouse Driver v2.1 beta 4 Mouse driver with wheel support for both AT and PS/2 mice; uses only 3K (!) of memory
BenQ (Acer) CDROM driver v2.14 Uses only 5K and works with many IDE CDROM drives
SHSUCDX v3.09 MSCDEX replacement ; uses only 6K resident ; can be unloaded. Now part of SHSUCD, a suite of programs dealing with the CD-ROM. Older versions here
UMBPCI V3.90 Free hardware UMB driver (only 240 bytes) for DOS/Win9x - replaces EMM386.EXE
Srdisk v2.09c dynamically ReSizeable RAMDisk for FreeDOS (and other DOSes) able to use over 32M of XMS and EMS memory. GPL
XMSDSK.EXE v1.9i Freeware resizable ramdisk;can be installed/uninstalled from the command line.

Free FDISK v1.3.4 GNU hard disk partitioning utility. Supports FAT16/FAT32 and non DOS partitions
Partition Resizer v1.34 Resize your FAT16/FAT32 partitions safely. Freeware
ZeroFill 1.09 Writes zeros on the empty disk space for the selected hard drive
Active @ KillDisk v4.1 Destroy all data on hard and removable drives without possibility of future recovery
XOSL 1.1.5 Free graphical boot manager to select what OS to run on startup

TestDisk v7.2 WIP Tool to check and undelete hard disk partitions. Supports FAT16/FAT32, ext2FS, NTFS and more
PhotoRec v7.2 WIP file data recovery software designed to recover lost files from Hard Disks and CDRom
Savepart v4.60 save entire or occupied portion of a hard drive partition (FAT16/32,ext2,ext3,NTFS) into a file for easy backup and restoration
Image v3.57 Disk image backup and restore program. Supports FAT, FAT32, NTFS partitions and most writable USB, IEE1394 drives, ATAPI CD/DVD drives without special drivers. Shareware
Ranish Partition Manager v2.44 powerful hard disk partitioning tool and can create, copy, and resize primary and extended partitions.
NTFS Reader for DOS freeware tool to read NTFS partitions from DOS (Alternate site)

Palmsys v1.21 3K Driver for parallel port Iomega ZIP drive; works on XTs and on 286 CPUs as well
SDWRGMPD v1.1 DOS driver for MS "Win9x only" SideWinder digital GamePad
USB DOS drivers collection of UHCI USB host controller drivers for keyboards, mice, joysticks, printers, disk drives, and hubs
Duse v4.9 From Pocketec, are USB DOS drivers for USB hard disks, CDROM drives and other USB storage devices like Zip drives
SPEEDZTER 2.5 From DAT Optic, are Firewire/IEEE 1394 DOS drivers for their external Speedzter 2.5" Firewire hard drives

BLACKOUT Gives DOS a graphic startup screen like Win9x. Can use your own GIF file
Real DOS mode patch for Win Me v1.3 A patch to enable WinMe users to boot to plain DOS
98lite 4.5 Removes Internet Explorer from Win9x/Me ; can install the faster Win95 GUI in Win98/Me
Bootdisk v1.0a my batch file to create a better Win95/98 boot disk using third-party utilities. Check the README.HTM

LFN Tools v1.79 DOS commands that can handle long filenames in plain DOS. Supports FAT32
DOSLFN 0.41d TSR to provide long filename API in plain DOS. Only 12K resident. Older versions here
LTOOLS v6.12 set of DOS command line tools to read and write to Linux ext2/3 and ReiserFS filesystems (the DOS opposite of Linux MTOOLS)

Scitech Univbe 6.7 and Display Doctor 6.53 enchanced VESA drivers for a variety of video cards. Now freeware.
VBEHz v2.23 Sets user-defined refresh rates on video cards with VBE 3.0+ for DOS progs using VESA video modes
UniRefresh v1.42 universal dos refresh rate utility for VESA 3.0+ video cards
Vmode 1.1 switch between various text modes (and even graphics modes) from DOS prompt

CD Recording Utilities v4.0H (download) These programs are a set of CD-R/CD-RW applications for DOS.
DOSCDroast beta 3 (Wayback archive of DOSCdroast website) suite of programs allows you to use IDE (and now USB and Firewire) CD-RW burners to burn CDROMS in plain DOS.
Cdrtools v2.01 DOS port of CDrTools (formerly cdrecord) allows you to burn CD with your CD-RW drive.
DVD4DOS Beta 1 test release software to play DVD with Dolby AC3 sound. Currently restricted to 1 minute (non-realtime) playback

HWiNFO v6.22 system information utility designed for detection of hardware. Last updated October 2022!
NSSI v0.60.45 freeware system information tool - last updated 2010
PC-CONFIG 9.33 Detailed system information/benchmark tool. Freeware, but no further development since 2000

ATXOff v1.3 Turn off your ATX computer system (similar to Win9x shutdown).
Shutdown v1.2 From Blacklight (Wayback Archive link), a small utility to either reboot your computer, or turn off the power (ATX systems only)

4DOS v8.00 updated opensource version of the powerful command line interpreter (COMMAND.COM replacement) for DOS by JP Software
DOSED v5.2 Freeware DOSKEY-like program but with filename completion like Linux's Bash shell
FileC v2.0 Autocompletes filenames at command prompt ; support Win9x LFN in DOS box
WCD 6.0.4 Wherever Change Directory allows you to change to any directory by typing part of a directory name
ACD v3.05 Change to another directory on any drive quickly. Has Win9x LFN support
Inkutils 1.53 Freeware suite of eleven DOS, 4DOS and Windows 95/98 DOS utilities.

TDel v2.68 Powerful freeware replacement for the DEL (delete) command
XXCOPY 2.93.1 powerful replacement XCOPY with many features. Free for personal use (direct download link)

TextTools R6 (Wayback archive link) (SAC FTP link) Freeware programs for processing text tables and general text filtering
TSFLTC R2.2 A set of additional text file filters from Prof. Timo Salmi (now retired).
Slowdown v3.1 Slows down a fast computer so you can run older programs, or as a troubleshooting aid.

EtherDFS v0.8.2 installable filesystem TSR to map a drive from a Linux computer to a DOS drive letter using Ethernet frames (no TCP/IP stack needed)

Applications

Corel WordPerfect Suite for DOS Excellent website about WPDOS including printing to USB printers, Euro Support, running WPDOS in Windows 10 and MUCH more
Account Pro accounting software for DOS Manage your accounts. freeware
As-Easy-As v5.7As-Easy-As Spreadsheet program. Now freeware
Cash Register v7.1j Convert any PC into a cash register/Point of Sale system. Freeware

PEDIT v4.0 Excellent freeware text editor.Includes spell-checker,thesaurus,word wrap and MUCH more.
EDITV 4.1 Freeware DOS text editor with the look and feel of Borland's IDE editor
SET's editor v0.5.4 Familiar Borland interface with syntax highlighting and background playing of MP3 files!
MinEd 2022.27 Text editor with extensive Unicode support

The Costa GUI v1.7.0 a DOS GUI with built in theme and icon editor and several apps (calculator, text viewer, games). Last updated January 2023
DOSStart v1.9b build 9.2.2002 GUI for launching programs (uses Win9x "Start" button approach) and managing files.
Spectra v1.0 (formerly WinDOS) a GUI DOS file manager / shell. Source code available
Access v5.0RC2 Freeware graphical DOS menu program. Supports SVGA, built-in CD player; can use Windows icons
AUMenu for DOS and Unix v1.4.3a multi-platform menu shell for DOS and Linux. DOS version is free
Directory Freedom v4.61B Small (single 39K exe), fast freeware file/directory manager. Source code available
File Maven v3.5a Freeware file manager with Laplink-style file transfers via serial or parallel cable

PasswordBox 0.11 PasswordBox keeps all of your passwords in a encyrpted database protected by a master password
Infopal v6.1 Program where you can design and browse databases and generate reports
Dirtel v3.28 Address book manager; contents can be exported to HTML,RTF and ASCII delimited text.

InfoZIP Create ZIP files, extract files from ZIP files created with PKWARE's Pkzip/Pkunzip v2.04g.
Pkzip/Pkunzip v2.50 An update to the "classic" Pkzip/Pkunzip v2.04g. Supports LFN under LFNDOS or Win9x. No shareware version available for download though.
UPX v4.02 powerful GPL'ed executable packer (meaning the compressed executable files can still be run directly)

VIEW v17.2 Allows you to view WordPerfect, Word 97 docs and other word processor formats. Now freeware
xlHtml v0.4.0 commandline converter of MS Excel XLS files to HTML
AntiWord v0.37 converts MS Word DOC files to plain text PostScript
Catdoc v0.94.2 convert MS Word DOC files to plain text
MuPDF graphical PDF viewer
Xpdf v3.03 (DOS binary and source download) Extract text and images from Adobe's Acrobat's PDF files
PSVIEW v17.1 user friendly shell program for viewing Postscript and PDF files ; requires Pictview, PDFTOPs and Ghostscript
uHex 1.04 Simple and fast hex editor for DOS

CAMWORK DOS program that downloads images from Agfa, Olympus and Epson digital cameras.
PhotoPC software Software for DOS and other OSes to control Epson, Agfa, Nikon digital cameras
Rio v1.07 Upload/download files to/from your Diamond Rio portable MP3 music player.
Daqarta v2.21 Does Data AcQuisition And Real-Time Analysis using popular sound cards ; Has many other features. Free for non-commercial use

DESI-III v8.03 Free, yet professional 2D CAD program.
Figlet 2.2.5 creates large ASCII characters from ordinary ASCII characters)
DATES v2002.08 Non-TSR program to keep track (and remind you in advance) of important dates

Internet

Arachne v1.99 GPL updated GPL version of Arachne (last update Dec 23, 2021), a graphical DOS Internet suite (web browser, FTP, Email).
Links Web Browser 2.28 Open Source text web browser
DOStodon a Mastodon client for DOS which relies on DOjS to run
DOS port of Lynx 2.9.0dev10 DJGPP port of Lynx browser. Supports IDN and access to https websites.
Arachne v1.70 Release 3 The final offical release of the graphical DOS Internet suite (web browser, FTP, Email) out there. Now has preliminary CSS support.
Dillo for DOS v3.0.2b port of Dillo multi-platform web browser
Lynx 2.8.5rel.1 (a href="https://web.archive.org/web/20191204135402/http://www.rahul.net/dkaufman/index.html">Wayback link) DOS port of the text based Linux browser. Can access secure (https) websites
DOSLynx v0.44b another port of text based Lynx browser with built in TCP/IP stack ; supports https
Net-tamer v1.13 beta text based internet suite (browser,email,FTP,Usenet). Speech friendly for talking programs

CHASE 1.0 DOS-based POP3/SMTP e-mail client
JOSHFTP DOS-based FTP client
picoSNTP 0.91: an SNTP (Simple Network Time Protocol) client for DOS to synchronize the computer clock with NTP servers
leetIRC v1.1 DOS Internet Relay Chat (IRC) client with support for mIRC colour and bold codes, DCC file transfer support and more
Toffee IRC client v1.0 DOS IRC client ; works with any packet driver
RockIRCd v1.0 testing Internet Relay Chat (IRC) server for DOS
mTCP 2022-07-01 a TCP/IP stack with several applications (DHCP client, FTP client, ping, HTGet, FTP Server, HTTP server, Telnet and more). Updated July 2022

picoTCP picoTCP is an open source IPv4/IPv6 TCP/IP stack ported to DOS by Mateusz Viste
LSppp V1.0 Excellent small PPP packet driver (28K resident!) for DOS. Has built-in dialer. Released under GPL.
PEPA v1.9 Packet Driver for PPP access over ADSL.
Comring v1.20 Packet driver for serial ports; can be used to connect multiple computers via serial cable

EZ-NOS 2 a http web server with Server Side Includes support, secure FTP Server with md5 authenication, DNS server and a TCP/IP access filter (firewall) and more!
WebServ 0.9beta DOS based HTTP server in QuickBasic
Sioux DOS web server with DYNDNS client
Jaffa WWW server for DOS Tested on a 80286, supports CGI-BIN utilities external to the server
Tiny TINY is a set of programs that lets you control a DOS computer from any Java-capable machine over a TCP/IP connection.
Internet Extender v1.0b (Mirror Link is from Fred's DOS Internet Software page) Freeware DOS Gateway router which allows networked computers to access the Internet (via a modem or network card)

Mutt 1.5.5 text-based e-mail client with modified patches for NNTP, POP and SMTP ('builtin' sendmail) and calls to external apps (i.e. 'print', 'pipe message' and 'pipe attachment')
FLMail 0.91 Graphical email client. Supports OpenSSL.
Wget 1.8.2 (a href="https://web.archive.org/web/20191204135402/http://www.rahul.net/dkaufman/index.html">Wayback link) Download files and entire sites for offline browsing using HTTP or FTP; can RESUME ABORTED downloads!
SSHDOS v0.95 opensource SSH (Secure Shell) DOS client for secure telnet connections.

ViewHTML v2.5 Freeware text based offline HTML viewer/browser.
GPAGE v1.9 Uses a text file to generate a local page of links
Tidy386 HTML validator and can also clean up your HTML
Orb v2.0 HTML preprocessor designed to simplify creation and maintenance of web pages
PPWIZARD 22.148 Free, multi-platform HTML Preprocessor. Requires free Regina REXX interpreter. I use this to generate this site

UUDeview v0.5d Encoder and decoder for uuencoded, xxencoded, Base64 and BinHex data
HTMSTRIP v2002.08 From Bruce Guthrie, converts HTM to text. Many other utilites there as well.
EUMAIL v2002.08 Extract Eudora's mailboxes and nickname files into text files
HTMCAL v2.0 Generate HTML calendars showing upcoming events or meetings. Shareware

Arachne related Websites (various sites where you can download various addons to Arachne, a DOS internet suite)

Arachne APMs various addons for Arachne
Ron Clarke's Arachne pages collection of unique Arachne addons including RSS reader, watch YouTube videos and more
Dfilter v3.0 Arachne email filter for Arachne v1.47b to v1.67. Filters are saved for future use. Check the README.TXT (updated 4th November 2000)
Dshell v2.0 Patches Arachne's v1.5 SRC "Shell to DOS" function. Included in Arachne v1.7x (updated 6th Dec 1999)
Mel's Arachne4dos UK Home Page

Programming

Free Pascal v3.2.2 32 bit compiler for DOS, Linux, Win32 and other platforms. Semantically equivalent to TP 7.0
DJGPP C++ v2.05 Complete 32-bit C/C++ development system for 386 (and higher) PCs running DOS.
OpenWatcom v1.9 opensource C/C++ compiler with IDE, debugger
DOjS 1.10.0 a Javascript coding environment for DOS featuring integrated editor, graphics and sound output, mouse/keyboard support

Introduction to C programming (Wayback Archive link) a free study guide on writing programs in the C language
Euphoria Programming Language v3.1.1 opensource interpreter/compiler for 32 bit DOS, Win9x/XP, Linux and FreeBSD

HX DOS Extender 2.17RC free DOS extender which contains a Win32 API emulation which allows Win32 console apps to be run in DOS
MoonRock v0.50 BASIC-like language with several extensions. Produces code for 8086+
Borland Community Museum Download Turbo C v2.01, Turbo Pascal v5.5, Turbo C++ v1.01 for free (requires login)
Regina v3.9.5 a REXX interpreter that has been ported to DOS and other OSes
Perl v5 (see Perl ports for DOS versions) Interpreted language for scanning and extracting info from text files.
PythonD 2.4.2 r1.0 DOS port of Python v2.2.1. Python is an interpreted, interactive, object-oriented programming language.

Pbats v3.2 Powerful archive of tiny batch tools from the author of GPAGE and WBAT, Horst Schaeffer.
WBAT v2.50 Use dialog boxes (with menus, buttons, input fields, checkboxes) in your batch files.
V8Power Tools for DOS v20.08.06-0 variety of tools to use in your batch files
Clay's Utilities for DOS v1.3 Set of small utilities for batch files.
Batfiles Good website on DOS batch file programming.
TSBAT.ZIP A collection of useful batch files and tricks from Prof. Timo Salmi.

NewBasic v00.97.91 an x86 Assembler/Disassembler for DOS
Assembly Language FAQ Available in HTML and text format.
Assembly Language Journal online ezine covering assembly language programming techniques. A mirror can be found at mattst88

The Costa GUI v1.7.0 a DOS GUI with built in theme and icon editor and several apps (calculator, text viewer, games). Last updated January 2023
Ozone Graphical environment, support Truetype fonts, and includes several programs
Seal 2.00.11 Free graphical desktop environment for DOS and for DJGPP programs.
OpenGEM v6 GUI (once commercial, now open source) geared for low resource PCs, distro includes several apps.

Allegro 5.0.10 multi-platform game programming library for DJGPP in a mixture of C and assembly.
MGRX 1.4.1 MGRX is a 2D graphics library derived from the GRX library
NanoX-microwindows-nxlib-fltk-for-DOS port of Nano-X Window System and Fast Light Toolkit, GUI toolkit to DOS. Several applications are available
OpenGUI v5.5.14 multi-platform 32-bit graphics library/GUI for DOS (DJGPP), QNX and LINUX

Watt-32 v2.2 dev-rel 11 library for making networked TCP/IP C/C++ 16 and 32 bit programs.
eRTOSdevelop embedded Intel 8086 (and compatible) Internet-accessible applications. Now freeware
ISRemote for DOS v2.53 remotely control DOS apps with a IR remote and a DIY circuit
DOSGir v0.12 control DOS apps by infrared remote control and a DIY circuit
Full Moon Software Many QuickBasic/PDS routines ; also has the text to PC Mag's 'BASIC Techniques and Utilities'
NeoBasic provides GUI components to extend the DOS authoring NeoBook software
Guenther Klaming's Homepage Low-level hardware programming in Watcom C/C++, Pascal and Assembly.

Programming MS-DOS with Power Excellent site with many source code in Assembly, QuickBasic and Pascal.
DOS Help Magazine EXCELLENT HTML ezine on DOS and DOS programming.
Runtime Error 200 Page Explains the Runtime Error 200 Startup bug for Borland Pascal EXEs on fast CPUs

Alternative DOSes (all MSDOS compatible OSes other than MSDOS itself - including emulators)

FreeDOS v1.3 A GNU GPLed version of DOS. Also has lots of DOS-related news.
SvarDOS Build 20220302 FreeDOS based OS which aims to collect vailable DOS software, package it and make it easy to find and install applications using a network-enabled package manager
FreeDOS images for VirtualBox Ulrich Hansen's page provides FreeDOS images for VirtualBox and various tips for running FreeDOS in Virtualbox
Cobalt 0.1(formerly known as Carbon) a DOS distro based on FreeDOS with long filename support. Nightly builds available.
XFDOS 2.0 FreeDOS distro with graphical SLWM desktop manager and bundled with many applications including web browser, email client, PDF viewer and more
DR-DOS 7.01.08 WIP (21.7.2011) patches to enhance the capabilities of DR-DOS/OpenDOS 7.0x
DOSBox 0.74-3 open source DOS x86 emulator for Windows, Linux to (primarily) play DOS games
DOSBox-X 2022.12.16 open source DOS x86 emulator for Windows, Linux. MacOS to run DOS applications and games
IBM PC DOS 2000 Last version of PC DOS offers Y2K compliance and support for Euro symbol. Only a info page from the Wayback archive
DR-DOS 7.03 From DeviceLogics (formerly Lineo/Caldera), has native FAT32 support. Marketed towards embedded systems
Lineo DR-DOS 7.03b unoffical site about DR-DOS, a DOS which includes Personal Netware and has many other unique features

Datalight ROM-DOS v7.1 geared for embedded and mobile systems; supports FAT32, LFN and has integrated web, ftp, email servers.
PTS-DOS 2000 (Wayback Archive link) has many features including a OS boot manager, networking support and data compression

DOS related websites and other useful links

Free Software for DOS Rich Green's MUST visit site for any DOS user. Wide variety of software.
Internet Archive's DOS Applications and Programs Run DOS applications in your (modern) web browser
Simtel.net archive An archive of the Simtel.net LARGE well known collection of DOS freeware, public domain and shareware programs
"DOS ain't dead" forum - quite active forum with DOS news and discussions
Free Software for DOS A archive/mirror of the original "Free Software for DOS" as maintained by Steve 'Short.Stop' Adelewitz. Steve passed away in January 2009
MDGx DOS Power Toys - great list of DOS programs
Daniel Rose's Legacy Computer Collections A collection of screenshots of many DOS programs
DR-DOS wiki wiki documenting DOS kernels (not just DRDOS) and DOS programs

FreeDOS website has a news section about DOS which is regularly updated. See also FreeDOS's Twitter feed
DOS Solutions Lots of information and related links about DOS.
NOTES ON MS-DOS 6.22 Documents all MSDOS 6.22 commands and other DOS batch files information
FAQ on DOS Applications for Internet Use Various DOS Internet programs and where to get them.
Hitsquad Various music software for DOS (MIDI, MOD, translators, etc)

DOS Games Listing of many FREE Games (with descriptions) for DOS! Recently redesigned and with the ability to play many DOS games in your (modern) browser
DOS Games Archive A archive of (what else?) DOS games
GOG.com buy and download many DOS games
Internet Archive's Software Library: MS-DOS Games Play DOS games in your (modern) browser

WordPerfect for DOS Updated Great site for drivers, info and other resources for WordPerfect 5.x/6.x for DOS and for running WPDOS in Windows 7/8/10
Wordstar Resource Site a help site for WordStar for DOS users, has several freeware DOS Wordstar utilites
Bright Electronics - MS-DOS Networking howto guide on peer to peer networking with DOS
DOS TCP/IP networking with Packet Drivers
Packet Drivers Collection for DOS a collection of DOS drivers and utilities for various network cards
Computing.Net DOS forum Post and answer questions about DOS
Darkehorse.web.com archived site about USB support for DOS
CD-ROM Drivers Collection of URL Links to DOS drivers for various CD-ROM drives

Other useful websites

FCC's FCC ID Look up Useful for identifying hardware via its FCC code
Driverzone's FCC ID Look-up Useful for identifying hardware via its FCC code

Programmer's Heaven Has many programming related files and links
Trinidad and Tobago Computer Society My computer user group webpage.

Interesting DOS programs

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DOS Program Categories

New/Updated Links (updated February 10 2023)

New/Updated Links (updated March 13 2022)

New/Updated Links (updated March 6 2021)

Sound Programs (includes audio CD players)

Graphics_Programs/Screensavers

Utilities

Applications

Internet

Arachne related Websites (various sites where you can download various addons to Arachne, a DOS internet suite)

Programming

Alternative DOSes (all MSDOS compatible OSes other than MSDOS itself - including emulators)

DOS related websites and other useful links

Other useful websites