Software

Introduction

The list below is not complete and some of the web pages may not be current; we recommend that you also look at the Free Software Directory - a categorized, searchable database of free software, GNU and non-GNU. This directory is actively maintained by the Free Software Foundation and includes links to program home pages when they are available.

For information on the licenses used on GNU software, and on other free software licenses, please see our Licenses page.

Below is a list of most GNU software, including GNU Java programs.

We would like to list all GNU programs here, but that will take more work. If you would like to write descriptions for other GNU programs, here's what to do!

We also maintain:

lists of both GPLed and Non-GPLed software that is not part of the GNU Project, but which we feel are important to mention.
information about Year 2000 issues with GNU software.
a list, updated daily, of the latest releases of GNU Project software.

If you're looking for a list of GNU projects or other free software related projects, please look at our projects page.

If you are interested in contributing to GNU Projects, please have a look at our help-wanted page.

If you want to buy a new computer, you might want to consider one of these companies who sell computers with wholly free systems preinstalled.

How To Get GNU Software

GNU software is available by several different methods:

Buy copies on CD-ROM from the FSF. This helps provide the funds for the GNU Project.
Our three CD-ROM sets include source code for all GNU software, GNU compiler tools executable on ten common platforms, and a larger selection executable on intel-microsoft platforms.
Get it by FTP. By FTP we provide source code for all GNU software, free of charge.
(Please also make a donation to the FSF, if you can, to help us write more free software.)
Get a copy from a friend.
(Please also make a donation to the FSF, if you can, to help us maintain free software.)
Buy a computer with a wholly free GNU/Linux system preinstalled from one of the companies that can offer this.

Descriptions of GNU Software Packages

a2ps is an Any to Postscript filter.
adns is a resolver library for C and C++ programs.
Autoconf produces shell scripts which automatically configure source code packages.
Autogen is a tool for automatically generating arbitrary text files that contain repetitive text with varying substitutions.
Automake is a tool for generating Makefile.in files for use with Autoconf.
GNU Backgammon plays and analyses backgammon games and matches. It is currently a work-in-progress.
GNU Barcode is both a library and a program that can encode strings into barcodes.
Bash, the Bourne Again SHell, is compatible with the Unix `sh' and offers many extensions found in `csh' and `ksh'.
Bayonne is a multi-line voice telephony server, with the goal to be the most flexible and advanced telephony voice messaging server available.
bc is an interactive algebraic language with arbitrary precision numbers.
Binutils includes these programs: `addr2line', `ar', `c++filt', `demangle', `gas', `gprof', `ld', `nlmconv', `nm', `objcopy', `objdump', `ranlib', `readelf', `size', `strings', `strip', and 'windres'.
Bison is an upwardly compatible replacement for the parser generator `yacc'.
Bool is a utility for finding files that match a boolean expression.
Calc is an extensible, advanced desk calculator and mathematical tool that runs as part of GNU Emacs.
cfengine is used to maintain site-wide configuration of a heterogeneous Unix network using a simple high level language.
Cgicc is a C++ class library for writing CGI applications.
Checker is a package that works with GCC to detect memory use errors in a program.
Chess is a state-of-the-art chess-playing program.
GNU Cim is a compiler for the programming language Simula.
C Library for use with GNU/Hurd and GNU/Linux.
CLISP is an implementation of the ANSI Common Lisp with compiler, interpreter, debugger and more.
Cobol for GCC is a project to produce a free COBOL compiler integrated into the GNU Compiler Collection
CommonC++ is a C++ framework offering portable support for threading, sockets, file access, deamons, persistance, and system services.
Cons - A Software Construction System (Make Replacement).
cpio copies file archives to and from disk, or to another part of the local machine.
cpp2html s a simple program that, given a source C/C++ file, produces an html source with syntax highlighting.
Dap is a statistics and graphics package based on C.
DDD is a graphical front-end for GDB and other command-line debuggers.
DejaGnu is a framework to test programs with a single front end for all tests.
Denemo is a graphical music notation program to be used in conjunction with GNU Lilypond.
Diction, and Style, check English text for common bad usage and analyze readability. (This package is still in development.)
Diffutils includes GNU `diff', which compares files showing line-by-line changes in several flexible formats.
DJGPP includes GCC, G++, and GNU utilities for DOS.
dld is a dynamic linker which allows the dynamic loading of object files into a running binary.
doschk is a utility to ensure that source file names are distinguishable on MS-DOS, FreeDOS and other DOS systems with 8+3 character filenames, and on System V platforms with 14-character filenames.
Dr. Geo is interactive software that allows the construction of geometric figures.
Dumb is a free engine for running Doom worlds.
ed is the standard text editor. It is line-oriented and can be used interactively or in scripts.
EDMA is an open and modular development environment similar to the Component Object Model or the System Object Model.
Electric is a sophisticated electrical CAD system that can handle many forms of circuit design.
Elib is a small library of Emacs Lisp functions, including routines for using AVL trees and doubly-linked lists.
Emacs is an extensible, customizable real-time display editor and computing environment. It offers true Lisp--smoothly integrated into the editor--for writing extensions and provides an interface to the X Window System.
enscript is an upwardly-compatible replacement for the Adobe `enscript' program. It formats ASCII files (outputting in Postscript) and stores generated output to a file or sends it directly to the printer.
The Fileutils are: `chgrp', `chmod', `chown', `cp', `dd', `df', `dir', `dircolors', `du', `install', `ln', `ls', `mkdir', `mkfifo', `mknod', `mv', `rm', `rmdir', `sync', `touch', and `vdir'.
Findutils includes `find', which is frequently used both interactively and in shell scripts to find files which match certain criteria and perform arbitrary operations on them. Also included are `locate', which scans a database for file names that match a pattern, and `xargs', which applies a command to a list of files.
GNU Finger is a utility program designed to allow users of Unix hosts on the Internet network to get information about each other.
The Fontutils convert between font formats, create fonts for use with Ghostscript or TeX, etc.
Gawk is upwardly compatible with the latest POSIX specification of `awk'. It also provides several useful extensions not found in other `awk' implementations.
gcal is a program for printing calendars. It displays different styled calendar sheets, eternal holiday lists, and fixed date warning lists.
GCC is a free compiler collection for C, C++, Fortran, Objective C and other languages.
GCL or GNU Common Lisp, is a compiler and interpreter for Common Lisp.
gdb is a source-level debugger for C, C++ and Fortran.
gdbm is a replacement for the traditional 'dbm' and 'ndbm' libraries.
gengetopt generates a C function that uses getopt_long function to parse the command line options, validate them and fill a struct.
The GNU gettext tool set has everything maintainers need to internationalize a package's user messages.
gforth is a fast, portable implementation of the ANS Forth language.
Ggradebook is an application for tracking student grades for teachers.
Ghostscript is an interpreter for the Postscript and PDF graphics languages.
Ghostview provides a graphical front end to Ghostscript allowing a Postscript or PDF file to be previewed using an X Window interface.
The GNU 3DKit is part of the GNUstep environment, which provides an Object-Oriented application development framework and tool set for use on a wide variety of computer platforms.
GNU AWACS, the Advanced Monitoring And Control Structure.
GNU Global is a source code tag system that works the same way across diverse environments.
GNU lightning is a fast, easily retargetable library that allows programs to compile assembly language subroutines at run-time and still be portable.
GNU Image Finding Tool is a Content Based Image Retrieval System.
The GIMP, the GNU Image Manipulation Program, is like Photoshop only better.
GIT, the GNU Interactive Tools package, includes: an extensible file system browser, an ASCII/hex file viewer, a process viewer/killer, and other related utilities and shell scripts.
gleem, gleem: OpenGL Extremely Easy-to-use Manipulators is a small, self-contained C++ library of 3D Widgets that support direct user interaction with a 3D scene.
GLUE, GLUE Links Users Everywhere, the GNU integrated Internet groupware project.
gmp, GNU mp, is a library for arithmetic on arbitrary precision integers, rational numbers, and floating-point numbers.
GNAT is a complete Ada95 compilation system, maintained and distributed under the GNU General Public License by Ada Core Technologies.
GNATS, GNats: A Tracking System, is a bug-tracking system. It is based upon the paradigm of a central site or organization which receives problem reports and negotiates their resolution by electronic mail.
GNOME is the GNU desktop, intended to provide graphical user interfaces for all the tasks for which they make sense. GNOME has everything from spreadsheets to mail clients.
The Gnucomm project aims to provide better solutions to common telecommunications problems.
GNU Go plays the game of Go.
GNUjdoc is a central archive of Japanese translations of GNU documents.
Gnumeric is a spreadsheet intended to replace commercial spreadsheets.
GNUTS is a GUI toolkit abstraction library.
The GNU Octal project seeks to create a set of free components that work together as a digital music workstation for unix-like systems.
GNU Parted is a program that allows you to manipulate disk partitions.
Emacs/w3(sometimes jocularly called "GNUscape Navigator") is a Web browser that runs under GNU Emacs.
GNU Smalltalk is our implementation of the Smalltalk-80 language.
GNUstep provides a graphical, object-oriented programming environment.
gpaint is a simple, easy-to-use paint program.
GPC is the GNU Pascal compiler. It implements ISO 7185 Standard Pascal, large portions of ISO 10206 Extended Pascal and is highly compatible to version 7 of Borland Pascal.
GOOPS is the Object Oriented extension to Guile.
Goose is a C++ library for statistical calculations.
gperf generates a perfect hash function and hash table for a given set of strings.
GNU Photo is free software for retrieving, organizing, web-authoring and storing images in various graphics file formats, or for display directly to a monitor from a range of supported digital still cameras.
Greg is a framework for testing other programs and libraries.
The grep package includes GNU `grep', `egrep', and `fgrep', which find lines that match entered patterns.
GRG is the GNU Report Generator.
Groff is a document formatting system based on a device-independent version of `troff'.
GNU GRUB is the GNU GRand Unified Bootloader.
GnuPG is a program for encrypting, decrypting and signing email and other data. It is a complete implementation of the OpenPGP Internet standard.
GTK+ is a GUI toolkit for the X Window System.
GTKeyboard allows the user to press keys on an onscreen keyboard that will either be entered into a simple text editor, or into the application of choice.
Guile is the GNU extensibility library.
gzip is GNU's program for compressing and decompressing files.
The GNU hello program produces a familiar, friendly greeting. It allows non-programmers to use a classic computer science tool which would otherwise be unavailable to them.
Help2man is a tool for automatically generating simple manual pages from program output.
GNU hp2xx reads HP-GL files, decomposes all drawing commands into elementary vectors, and converts them into a variety of vector and raster output formats.
Httptunnel creates a bidirectional virtual data path tunnelled in HTTP requests.
Hyperbole, written by Bob Weiner in Emacs Lisp, is an open, efficient, programmable information management, autonumbered outliner, and hypertext system, intended for everyday work on any platform Emacs runs on.
ID Utils is a package of simple, fast, high-capacity, language-independent tools that index program identifiers, literal numbers, or words of human-readable text.
GNU indent formats C source code into GNU, BSD, K&R, or your own special indentation style.
Inetutils is a distribution of common networking utilities and servers.
JACAL is a symbolic mathematics system.
java2html is a small program that, given a java source code, produces an html source with syntax highlighting.
Kawa is a Scheme environment, written in Java, and that compiles Scheme code into Java byte-codes.
less is a display paginator similar to `more' and `pg', but with various features (such as the ability to scroll backwards) that most pagers lack.
libpng is a reference library for the PNG graphics format.
libtool makes it easy to develop and maintain shared libraries.
libxmi is a C/C++ function library for rasterizing 2-D vector graphics. It can draw 2-D vector graphics primitives onto a user-supplied matrix of pixels.
lilypond is a music typesetter.
GNU m4 is an implementation of the traditional Unix macro processor.
Mailman is a software to help manage email discussion lists.
make automatically determines which pieces of a large program need to be recompiled, and issues commands to recompile them.
Maverik is a virtual reality micro kernel.
The Midnight Commander is a user friendly and colorful Unix file manager and shell, useful to novice and guru alike.
Meta-HTML is a programming language specifically designed for working within the World Wide Web environment.
Mifluz provides a C++ library to build and query a full text inverted index.
The mll2html reformats a mailinglist file into a more convenient HTML file.
mtools is a set of public domain programs to allow Unix systems to read, write, and manipulate files on a DOS file system (typically a diskette).
Nana is a package for programming and testing debugging assertions.
Nano is a Pico clone for *NIX. It aims to solve a few "problems" with Pico while at the same time maintaining the look and feel and ease-of-use of the original.
Ncurses is a package for displaying and updating text on text-only terminals.
OBST is a persistent object management system with bindings to C++. OBST supports incremental loading of methods.
Octave does arithmetic for real and complex scalars and matrices, solves sets of nonlinear algebraic equations, integrates systems of ordinary differential and differential-algebraic equations, and integrates functions over finite and infinite intervals.
Oleo is a spreadsheet program. It supports the X Window System and character-based terminals, and can output Embedded Postscript renditions of spreadsheets.
Panorama is a framework for 3D graphics production.
patch is our version of Larry Wall's program to take `diff''s output and apply those differences to an original file to generate the modified version.
PCB is a freeware package for designing printed circuit board layouts.
Phantom.Home is a computer controlled home automation system.
Phantom.Security is a computer controlled security system.
The Plotutils package contains `libplot', a C/C++ library that can export 2-D vector graphics, in many file formats, and do vector graphics animations. It also contains several command-line programs for plotting scientific data.
GNU Prolog (gprolog) is a native compiler for ISO Prolog with constraint solving over finite domains.
PSPP is the GNU replacement for SPSS.
Pth is the GNU Portable Threads library
ptx is the GNU version of the traditional permuted index generator.
queue is a load-balancing/distributed batch processing and local rsh replacement system
R is a system for statistical computation and graphics. It is a dialect of the S programming language from Bell Labs.
Radius is a server for remote user authentification and accounting.
RAT is a Recipe Analysis Tool which calculates the total nutrients in a given recipe.
RCS, the Revision Control System, is used for version control and management of software projects.
GNU recode converts files between character sets and usages. When exact transliterations are not possible, it may delete the offending characters or fall back on approximations.
GNU Robots is a game/diversion where you construct a program for a little robot, then watch him explore a world.
rx is a replacement for the GNU regex library.
GNU Sauce (Software Against Unsolicited Commercial Email) is an SMTP server written to help in the fight against spam and also helps encourage good configuration and system administration in general.
Sather is an object oriented language designed to be simple, efficient, safe, flexible and non-proprietary.
sed is a stream-oriented version of `ed'.
shtool is a portable shell tool for use inside source trees of free software packages.
Sharutils includes `shar',which makes so-called shell archives out of many files, preparing them for transmission by electronic mail services; `unshar' helps unpack these shell archives after reception.
The Shellutils are: `basename', `chroot', `date', `dirname', `echo', `env', `expr', `factor', `false', `groups', `hostname', `id', `logname', `nice', `nohup', `pathchk', `printenv', `printf', `pwd', `seq', `sleep', `stty', `su', `tee', `test', `true', `tty', `uname', `uptime', `users', `who', `whoami', and `yes'.
smail is a mail transport system, designed as a compatible drop-in replacement for `sendmail'. It uses a much simpler configuration format than `sendmail' and is designed to be setup with minimal effort.
SmallEiffel is a complete, small, very fast Eiffel compiler.
Source Highlight is a collection of programs that given a source file, produces a document with syntax highlighting. It includes both GNU java2html and GNU cpp2html.
GNU SQL is a free, portable multiuser relational database management system.
stow manages the installation of software packages, keeping them separate while making them appear to be installed in the same place.
Sweater is a generic database front end tool.
SXML is a tool to define and implement a markup language.
GNU tar includes multi-volume support, the ability to archive sparse files, compression/decompression, remote archives, and special features that allow `tar' to be used for incremental and full backups.
The Termutils package contains programs for controlling terminals. `tput' is a portable way for shell scripts to use special terminal capabilities. `tabs' is a program to set hardware terminal tab settings.
texinfo is a set of utilities which generate printed manuals, plain ASCII text, and online hypertext documentation (called `Info'), and can read online Info documents.
textutils is a set of utilities for manipulating text.
time reports (usually from a shell) the user, system, and real time used by a process. On some systems it also reports memory usage, page faults, etc.
GnuTLS is an implementation of TLS 1.0 Internet standard.
GNU Trueprint is a program for printing source files and other text files to a postscript printer.
GNU Typist is a universal typing tutor for which tutorials can easily be written.
units is a program for units conversion and units calculation.
userv is a system facility to allow one program to invoke another when only limited trust exists between them.
VCDImager is a tool for generating Video-CD BIN/CUE images.
wdiff is a front-end to GNU `diff'. It compares two files, finding the words deleted or added to the first to make the second.
wget non-interactively retrieves files from the WWW using HTTP and FTP. It is suitable for use in shell scripts.
Window Maker is a window manager for X.
XaoS is a real-time fractal zoomer.
xhippo is a generic playlist manager program for a variety of sound players.
xinfo is an X-windows program for reading Info files.
Xlogmaster is an X11 program that does comfortable and fast monitoring of all logfiles and every device that allows its status being read by cat (like the /proc devices).
xshogi is a graphical Shogi (Japanese Chess) board for the X Window System.
Zebra is an implementation of many popular routing protocols.
zlib is a free lossless compression library.

Java programs

Various Java programs have been contributed to the GNU Project. You will find a list of these programs by visiting our list of Java packages and applications or our Java page.

Descriptions of Other GPL-Covered Free Software

These are some additional GPL or LGPL-covered free programs which we think it is useful to mention.

AbiWord is a word processor belonging to a suite of desktop productivity applications developed under the AbiSource Project.
Mats Weber's Ada Components for math, data structures, Ada programming tools and OS Interface.
Aegis is a transaction-based software configuration management system.
AIDE(Advanced Intrusion Detection Environment) is a free replacement for Tripwire(tm). It does the same things are Tripwire(tm) and more.
A.L.I.C.E. (Artificial Linguistic Internet Computer Entity) is a natural language, artificial intelligence chat robot.
Zelerate's AllCommerce is an "enterprise level, collaborative e-commerce application" in Perl. It replaces OpenMerchant.
Alliance is a complete set of CAD tools for the specification, design and validation of digital VLSI circuits.
Autochar is used to automate the characterization of digital circuits. -->
AWStats is a tool that enerates advanced web server access statistics in a graphical format.
bookland.py is a Python program that generates ISBN bar code symbols (Bookland EAN-13 + 5-digit add-on) in EPS format. Includes UPC-A and EAN-13 classes, so possibly useful in broader context.
Brltty is a daemon which provides access to the GNU/Linux console (text mode) for a blind person using a soft braille display.
The Bioinformatics Template Library (BTL) uses templates to implement generic programming in the same way as Standard Template Library (STL)
CAPA ("Computer Aided Personal Approach") is a network system for learning, teaching, assessment and administration. You can find the sources in /non-gnu/capa on ftp.gnu.org and it's mirrors.
Catdoc is a program which reads Microsoft word files and outputs ASCII text of the contents of the file.
cdcd is a command-line program to play CDs.
CGoban is a client program for the game of Go. It can be used to edit games, play on the Internet or with GNU Go
Checkaliases reads a sendmail aliases file and reports problems in it.
CUPS is a program under the GPL that provides a portable printing layer.
Changetrack is a program to monitor changes to a bunch of system files. If files are modified one day, and the machine starts working incorrectly a few days later, changetrack can provide information on which files were modified and help locate the problem.
Citadel is a BBS program.
CLN is a C++ class library for numbers. It provides arbitrary precision arithetic for integers, rationals, and floats and also many other common mathematical functions.
COAS is a general-purpose framework for configuration editing.
Coldstore is gigabyte scale persistent object store / OODBC, under GPL.
Compare is a program that compares two pieces of text for similarities.
Cook automatically determines which pieces of a large program need to be recompiled, and issues commands to recompile them.
CVS is a version control system (like RCS or SCCS) which allows you to keep old versions of files (usually source code), keep a log of who, when, and why changes occurred, etc.
Cyber Radio 1 is a client/server application used for live Internet audio broadcasts.
DGPS allows you to get GPS correction signals over IP. (This is no longer necessary, but looking at the program might be fun.)
DMtools are Python modules which can perform common data mining applications on databases.
The E Equational Theorem Prover is an automated theorem prover for clausal logic, based on superposition and rewriting.
eFax is a program for sending and receiving class 1 and class 2 faxes.
Elegant is an imperative programming language inspired by the abstraction mechanisms found in modern functional languages. It means: Exploiting Lazy Evaluation for the Grammar Attributes of Non-Terminals.
Eli is a compiler construction kit.
The Epeios project provides C++ libraries for multiple use.
EsounD is an audio file player and sound daemon.
Exim is a powerful mail transport agent.
FarsiTeX is a TeX typesetting program for Persian.
fastDNAml is a program for estimating maximum likelihood phylogenetic trees from nucleotide sequences.
FESI (pronounced like fuzzy) is a full implementation of the EcmaScript language.
FFCALL is collection of four libraries which can be used to build foreign function call interfaces in embedded interpreters.
fftw is a C subroutine library for computing the Discrete Fourier Transform (DFT) in one or more dimensions.
Fltk is a LGPL'd C++ graphical user interface toolkit for X, OpenGL and Windows.
FreeAmp is an MP3 player released under the GPL.
FreePascal is a free software implementation of the Pascal language.
FreeS/WAN is an implementation of IPSEC and IKE for GNU/Linux.
FreeVSD is free software that facilitates true Linux Virtual Servers within a 'chroot' environment, allowing web servers and other applications to be deployed and administered discretely, without compromise to security.
FRONTIER is a geometric constraint solver that supports 3d feature based design.
Gale is an instant messaging and presence software
Galway is a HTML editor that supports Java Script, VRML 2.0, and Script-Fu specifications.
gEDA is a collection of tools that include a schematic capture tool, a netlister, PCB tool, and a verilog compiler/simulator. gEDA stands for GPLd Electronic Design Automation Project.
Generic NQS, a batch processing system.
GeneWeb is genealogy software with a web interface. It supports 14 languages.
Geomview is an interactive3D viewing program for Unix.
GiNaC is a framework of C++ classes to perform some symbolic computations directly within that language.
G-Kermit.
GMT or Generic Mapping Tools is a collection of 60 UNIX tools that allow users to manipulate (x,y) and (x,y,z) datasets with a facility for producing complex Encapsulated Postcript(EPS) Illusrations.
GNUMed comprehensive and robust software package for paperless medical practice. As of today it is not part of the GNU Project depite of its name.
GnuSkies is an attempt to create a free version of the xephem program.
GRACE is a WYSIWYG 2D plotting tool for X Window System and Motif (LessTif).
grap is a language for typesetting graphs.
GRASS GIS is a Geographical Information System (GIS) with raster, topological vector, image processing, and graphics production functionality that operates in the UNIX environment through a graphical user interface and shell in X-Windows.
Gstat is a computer program for geostatistical modeling, prediction and simulation.
Harbour is a cross-platform compiler for the xBase language.
Hindent is a program for reformatting HTML code.
Hoard is a fast, scalable and memory-efficient allocator for multiprocessors.
ht://Dig is a complete world wide web indexing and searching system.
iGMT or Interactive mapping of Geoscientific Datasets, is a visual tool for generating Generic Mapping Tools (GMT) scripts.
Interchange (which combines Minivend and Tallyman) is a free full-featured web based electronic catalog/ordering system.
jMax is an environment for programming real-time interactive multimedia applications.
Kci is a chemical compiler, i.e., it reads a file describing a set of chemical reactions and simulates them.
TOCHNOG is a mathematical modeling program for heat diffusion, deformation, friction, and ground water flow.
LessTif is a free implementation of OSF/Motif.
Libsafe is a method to detect and handle buffer overflow attacks.
libtrash implements a trash can by intercepting calls to glibc's unlink().
libungif is a program to operate on GIF files using uncompressed GIFs when writing. See Why there are no GIF files on GNU web pages.
Light Speed! simulates a geometric lattice, or arbitrary object moving at high velocity through space.
Links is a text WWW browser with support for tables.
Linux is a monolithic UNIX kernel often used together with the GNU system.
Linux Lab Project is a project intented to help people with development of data collection and process control software for GNU/Linux.
Lout is a document formatting system similar in style to LaTeX.
LPE is a small, efficient programmer's editor for UNIX systems with support for a variety of modes including automatic indentation, brace flashing, syntax highlighting.
Lynx, a text-only Web browser that is GPLed.
MAM/VRS. The Modelling and Animation Machine and Virtual Rendering System form the basic components of a 3D visualization and graphics library for implementing visualization software.
maxima is a Common Lisp implementation of MIT's Macsyma system for computer based algebra.
MC is a program that creates vector-space models from text documents for use in text mining applications.
Mercury is a modern logic/functional programming language. The Mercury implementation includes a compiler, a debugger, a profiler, and numerous library packages and other tools.
MHonArc is a Perl program for converting e-mail messages as specified in RFC 822 and MIME to HTML.
MidiShare is an LGPL'ed musical operating system.
MIRO DC1+ driver for the Linux kernel.
The MIT Photonic-Bands package is a GPLd program for computing the band structures (dispersion relations) and electromagnetic modes of periodic dielectric structures.
Ulm's Modula-2 system provides a compiler for Modula-2.
The Monkey HTTP Daemon is an HTTP 1.1 server written entirely in C.
The Mozart Development Environment is a framework for developing user-extensible compilers or compilers for user-extensible languages.
MRTG is a tool to monitor the traffic load of network-links.
NetHack is a Rogue-like adventure game supporting character and X displays.
NURBS++ is a C++ library that hides the basic mathematics of Non-Uniform Rational B-Splines (NURBS).
NSBD, Not-So-Bad Distribution, is an automated Web-based distribution system that is designed for distributing free software on the internet, where users cannot trust the network and cannot entirely trust the software maintainers.
omniORB is a GPLed CORBA orb.
The Pizza Delivery System is a GTK+ Application for automating the order processing of both delivery and take away orders for your average Pizza Bar, Cafe, Bistro, etc.
Oberon V4 is an attempt to create an Oberon V4 for systems running GNU/Linux.
OpenACS is an advanced toolkit for building scalable, community-oriented web applications.
Openbios is working on a free bios.
Pagecast submits lists of URL's to various search engines.
pasdoc is a documentation generator for Pascal source code.
The Perl programming language combines the features and capabilities of C, `sed', `awk', and `sh'.
Perl Object Development System is an Integrated Development Environment (IDE) for developing web applications in Perl.
PIKT is a program for administering heterogeneous networked workstations.
Playmidi is a MIDI player for FM, GUS and external MIDI devices.
Pliant is a programming language framework.
Ploticus is a data display engine.
PRCS is the Project Revision Control System.
Profoil-WWW is a wind tunnel data analyzer.
qDecoder, A free ANSI C library to facilitate the creation of CGI software.
QScheme is a fast and small implementation of Scheme written in C.
QUAKE is a game released under GPL.
ReactOS is a GNU GPL clone of Windows NT.
Rememberance Agents are a set of applications that watch over a user's shoulder and suggest information relevant to the current situation.
RHIDE is an integrated development environment for DJGPP, with a beta version for GNU/Linux.
Rosegarden is an integrated MIDI sequencer and musical notation editor.
Roxen, an http server.
RRD TOOL is a system to store and display time-series data (i.e. network bandwidth, machine-room temperature, server load average).
Rsync is a file transfer program for Unix systems which provides a fast method for bringing remote files into sync.
The RTSP Reference Kit could evolve into a useful audio-playing program.
Samba is a file-sharing implementation under the GPL.
SANE is an application programming interface (API) that provides standardized access to any raster image scanner hardware.
screen is a terminal multiplexer that runs several separate `screens' (ttys) on a single character-based terminal.
SDCC is a retargettable, optimizing ANSI - C compiler.
Sharesecret splits a secret into some parts, given a threshold. It can recalculate the secret by joining thresold parts.
s-lang is a C-like programming language, designed to be embedded in programs.
SWISH++ is a Unix-based file indexing and search engine.
The Tiny COBOL project is a COBOL compiler being actively developed by members of the free software community.
Teacup is a CGI application designed to provide helpdesk problem report management for small to medium size organizations.
Tradeclient is a graphical email client and PIM.
Tvset is a program for GNU/Linux that uses the video4linux API to display TV images in X.
TWiki is a mature, full featured web based collaboration system that allows you to create dynamic web sites and knowledge base systems, track issues, manage documents, and collaborate on projects by a virtual team
VNC is a remote display system which allows you to view and interact with a remote 'desktop' using a very low-level graphics protocol which is platform-independent.
Vocabumonkey aims to produce a highly accessible collection of software focused on math and language skills.
VRweb is a browser for 3D worlds and scenes modeled in VRML.
Willows TWIN is a cross-plattform API.
WML is a HTML generation toolkit
WN, an http server.
XBase is a library for manipulating xBase files. It was formerly called "xdb", and before that "xBase".
XFS is a journaling filesystem for the Linux kernel.
Xfce is a complete desktop environment.
XMail is an Internet and intranet mail server featuring an SMTP server, POP3 server, finger server, multiple domains, and many other features.
XMMS is a GUI based Ogg Vorbis and MP3 player.
Yabasic or Yet Another Basic, implements the most common and simple elements of the basic language.
ytalk is a multi-user talk program, compatible with the older talk clients and daemons.

Descriptions of Other Non-GPL-Covered Free Software

These are some additional Non-GPL-covered free programs which we think it is useful to mention.

ACE (Adaptive Communication Environment) is an open-source object-oriented framework that implements many core design patterns for concurrent communication software.
Allegro is a game programming library.
Apache is a free HTTP (Web) server which is used by over 50% of all web servers worldwide.
BladeEnc is a free MP3 encoder.
TAO (The ACE ORB) is a high-performance, real-time CORBA ORB.
f2c is a Fortran to C converter.
Festival is a general multi-lingual speech synthesis system.
Flex
FreeGIS is a collection of links to free Geographic Information Systems tools and data.
Frontdesk, a web-based mail system for customer support and bug tracking.
ftnchek is a static debugger for Fortran 77 programs. It is designed to detect certain errors in a Fortran program that a compiler usually does not.
Gnuplot is a command-line driven interactive function plotting utility.
GPhysics is a simple game physics lib which does some simple calculations to achieve movement effects in any 2D game.
3D physics will be included eventually.
Hugs is a small, portable Haskell interpreter.
HylaFAX.
Ispell is an interactive spell checker that suggests `near misses' to replace unrecognized words.
Jabber is developing a free alternative to AIM and ICQ.
Mesa is a free implementation of OpenGL.
Mozart implements Oz, a concurrent object-oriented language with dataflow synchronization.
OPENCORES is a repository of open source, free IP synthesizable blocks and supplemental prototype boards. Most of their cores are currently under development but some are already available.
Ptolemy is a system-level design framework that allows mixing models of computation.
Python is an interpreted, interactive, object-oriented programming language.
TACACS+: This is a developers source code kit for a daemon that implements the TACACS+ authentication, authorization and accounting protocol used by Cisco boxes.
w3m is a text-based WWW browser, that can render tables and frames.
XJ3D is a library for implementing the VRML97 and X3D 3D graphics specifications.
Wumpus is an exact clone of the classical Wumpus game.
wxWindows is a cross-platform GUI development framework.
X window system.

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Updated: $Date: 2001/10/04 01:35:31 $ $Author: brett $