The OSSwin project: Open Source for Windows!

Amiga:

• WinUAE [???]

Apple:

• AppleWin [GNU GPL]

Atari:

DOS:

IA-32

Sega Master System:

Sega Genesis / Mega Drive

• Gens [GNU GPL]

• Swirly [GNU GPL]

• Yabause [GNU GPL]

• ZSNES [GNU GPL]

• Nintendo 64 [GNU GPL]

• Fuse [GNU GPL]

• QEMU [GNU GPL/GNU LGPL/MIT/BSD]

Encyclopedia

• Wikipedia

Filesharing

• MLdonkey GUI's:
  • sancho [???]
  • G2gui [GNU GPL]
  • MLDonkey Watch [GNU GPL]
• WASTE [GNU GPL]

• KCeasy
• Ares P2P [GNU GPL]

• BitTorrent [MIT license]
• BT++ [GNU GPL]
• MLdonkey [GNU GPL]
• TorrentSpy [MIT license]
• Azureus [GNU GPL]
• ABC [Python Software Foundation License]
• Shareaza [GNU GPL]
• BitTornado [MIT]
• G3 Torrent [MIT]

• Dcon Pro [GNU GPL]
• DC++ [GNU GPL]
• Shadows Direct Connect [GNU GPL]
• MLdonkey [GNU GPL]

• eMule [GNU GPL]
• eMule Plus [GNU GPL]
• Emule Morph Mod [GNU GPL]
• Online Signature [GNU GPL]
• MLdonkey [GNU GPL]
• Shareaza [GNU GPL]

• KCeasy
• LimeWire [GNU GPL]
• Gnucleus [GNU GPL]
• MyNapster [GNU GPL]
• Phex [GNU GPL]
• Qtella [GNU GPL]
• MLdonkey [GNU GPL]
• Shareaza [GNU GPL]
• FrostWire [GNU GPL]
• Cabos [GNU GPL]

• MLdonkey [GNU GPL]
• Shareaza [GNU GPL]

• HeavyMole [GNU GPL]

• Krimpy [GNU GPL]

• KazaaSearch
• MLdonkey [GNU GPL]
• FreeKZ [GNU GPL] (Development Status: 1 - Planning)
• More Sources Finder Corrected (Development status: Registered since 2002-09-21)

• MUTE [GNU GPL]

• NetMess [GNU GPL???]

• giFT
• KCeasy
• Freenet
• giFT-java
• wiFT [GNU GPL]

• TekNap [BSD style license]
• MLdonkey [GNU GPL]
• XNap [GNU GPL]

• MLdonkey [GNU GPL]

• TAC2 [GNU GPL]

FTP clients

• FileZilla
• ncftp
• TLSWrap [???]
• JFtp [GNU GPL]

Firewall & NAT

• Simple TDI Based Open Source Personal Firewall [GNU GPL]
• DeleGate [Other/Proprietary License]
• PktFilter [BSD License] (also has a SourceForge.net project page)
• IP|Screen (site down, development probably stopped. Anybody who can point me to the new location???)
• CodeSeeker [GNU GPL]
• IP Filter Firewall [GNU GPL]
• WIPFW [BSD]
• iSafer [GNU GPL]

• Pseud IP Masquerade (PIPMasq)

File systems (drivers)

• Explore2fs [GNU GPL]
• Ext2 (Linux) File System Driver for Windows NT 4.0 [LGPL]
• Ext2fsd [GNU GPL]
• FFS File System Driver [GNU GPL]
• FSDEXT2 [GPL]
• rfstool [GNU GPL]
• YaReG [GNU GPL]

Games

See this separate page and don't hesitate to organise the first Open-Source-Games-Only LAN-party in your neighbourghood!

Graphics

• The GIMP [GNU GPL]
• ImageMagick [Other/Proprietary License]
• Sodipodi [GNU GPL]
• Inkscape [GNU GPL]
• Synfig [GNU GPL]
• POV-Ray [Other/Proprietary License]
• Dia [GNU GPL]
• OpenFX
• Blender [GNU GPL or BL license]
• AutoTrace [GNU GPL]
• CopyRightLeft [GNU GPL]
• imgv [GNU GPL]
• restoreInpaint [GNU GPL]
• Wings 3D [BSD]
• Art of Illusion [GNU GPL]
• Irrlicht Engine [zlib/libpng License]
• Aqsis [GNU GPL]
• Nebula [MIT]
• Skencil [GNU GPL]
• Paint.NET [modified MIT]
• Pencil
• Jahshaka [GNU GPL]
• hugin [GNU GPL]
• potrace [GNU GPL]
• jhead [GNU GPL]
• Tux Paint [GNU GPL]
• GLE [GNU GPL]
• K-3D [GNU GPL]
• ASCII Generator dotNET [GNU GPL]
• TeXCAD [GNU GPL]

Instant Messaging

• Pidgin [GNU GPL]
• SIM-IM [GNU GPL]
• Miranda IM [GNU GPL]
• aMSN [GNU GPL]
• Psi [GNU GPL]
• Exodus [GNU GPL]
• WinJab [GNU GPL]
• LLuna2 [GNU GPL]
• wxSkabber [Aladdin Free Public License]
• CenterICQ [GNU GPL]
• aiMutation [GNU GPL]
• Coccinella [GNU GPL]
• Tkabber [GNU GPL]
• Ayttm [GNU GPL]
• BuddySpace [JOSL]
• Gabber 2 [GNU GPL]
• TSIM [GNU GPL]
• BitlBee (gateway to IM networks) [GNU GPL]
• Retroshare [GNU LGPL]

Internet Voice chat

• OpenH323 Project
• Speak Freely [GNU GPL]
• Ekiga.org [GNU GPL]
• AsteriskWin32 [GNU GPL]
• IAX Phone [GNU GPL]

• PhoneGaim [GNU GPL]
• Shtoom [GNU LGPL]
• SIP COMMUNICATOR [Apache Software License]
• sipXphone [GNU LGPL]
• sipXezPhone [GNU LGPL]
• SIPp [GNU GPL]
• wengo [GNU GPL]

IRC clients

• X-Chat 2 [GNU GPL]
• KVIrc [KVIrc License]
• savIRC [GNU GPL]
• BitchX
• BoxedIrc [GNU GPL]
• HydraIRC [Other/Proprietary License]
• Bersirc [Q Public License]
• Mozilla's ChatZilla [MPL, NPL]

Mail & News

• Mozilla [NPL/MPL/LGPL/GPL]
• Mozilla SeaMonkey [MPL, NPL]
• Sylpheed-Claws
• MicroPlanet Gravity [BSD]
• Eudora [???]
• Athea
• Mahogany
• Polarbar Mailer
• Magic Mail Monitor 3 [GNU GPL]
• Phoenix Mail
• MailReactor [GNU LGPL]
• RoundAbout [GNU GPL]
• AmphetaDesk
• KookieJar (signature generator)
• POPFile
• Outclass [GNU GPL]
• mutt [GNU GPL]
• Unixmail [GNU GPL]
• XanaNews [MPL]
• Pan [GNU GPL]
• Mozilla Thunderbird
• PopTray [GNU GPL]
• Blat [Public Domain]
• slrn [GNU GPL]
• FeedReader [GNU GPL]
• RSSOwl [Common Public License]
• Evolution [???]
• si.Mail [GNU GPL]

• YahooPOPs! [GNU GPL]
• HotPOP3 [GNU GPL]
• FreePOPs [GNU GPL]
• MrPostman [GNU GPL] (Note: has been reported not to work with the current HotMail system...)
• jHTTPMail [GNU LGPL] (how to use this??? is it a library ???)
• HTTPMail [GNU LGPL] (how to use this??? is it a library???)
• Blue HTTPMail [zlib/libpng License] (How to use this???)

• Mailfilter [GNU GPL]
• Spamihilator [GNU GPL]
• SpamBayes [Python Software Foundation]

Media Players (audio)

• Delphamp [GNU GPL]
• Zinf [GNU GPL]
• LongPlayer [GNU GPL]
• CoolPlayer [GNU GPL]
• SnackAmp [GNU GPL]
• NotifyCD [GNU GPL]
• Winamp Radio Scheduler
• MP3Gain [GNU LGPL]
• MPlayer [GNU GPL]
• MPLayer Control [GNU GPL]
• Mixxx [GNU GPL]
• Songbird [GNU GPL]
• musikCube [BSD]

Media Players (video)

• VideoLAN [GNU GPL]
• Media Player Classic (see als this page).
• Media Player Classic - Home Cinema
• Xine (where exactly can the official windows binaries be downloaded?) [GNU GPL]
• MediaPortal [GNU GPL]
• MPlayer [GNU GPL]
• GPAC
• Vitessa [GNU GPL]

Media Players (codecs)

• ffdshow (DirectShow decoding filter for decompressing DIVX movies) [GNU GPL]
• ffvfw (MPEG-4 Video for Windows codec) [GNU GPL]
• AC3Filter [GNU GPL]
• XviD [GNU GPL]
  • Koepi's XviD binaries [GNU GPL]
  • Nic's XviD binaries [GNU GPL]
  • uManiac's XviD binaries [GNU GPL]
• MediaCoder [GNU GPL]
• Theora [BSD-style]
• FLAC [GNU GPL]

MC303 utilities

• GBM-303 [GNU GPL]

Networking tools

• OCS Inventory [GNU GPL]
• Packetyzer [GNU GPL]
• WinDump [BSD]
• Analyzer [BSD]
• Ethereal Network Analyzer [GNU GPL] (deprecated)
• Wireshark [GNU GPL]
• Packetizer [GNU GPL]
• Nmap [GNU GPL]
• Show Traffic [BSD]
• daSniff [no license]
• Network Game Detect [BSD]
• Port scanner [GPL]
• ngrep [Other/Proprietary License]
• Knocker [GNU GPL]
• Winip [Artistic License]
• NetBios Scan [GNU GPL]
• NetBIOS Enumerator [GNU GPL]
• OpenVPN [GNU GPL]
• DeeEnEs [GNU GPL]
• Dynksys Dynamic IP Updater [GNU GPL]
• MyDyndns [GNU GPL]
• SSL-Explorer [GNU GPL]
• Hardscan [GNU GPL]
• tcping [GNU GPL]
• mturoute [Public Domain]
• tsb [GNU GPL]
• Scapy [GNU GPL]
• OpenRSM [GNU GPL]

NTP clients

• NetTime [BSD]
• NIST Internet Time Service [Public Domain]

Office tools

• OpenOffice.org [GNU GPL/LGPL and SISSL]
• OOExtras [LGPL]
• OOo Label Templates [GPL]
• AbiWord [GNU GPL]
• PDFCreator [GNU GPL]
• qvPDF [GNU GPL]
• pdftk, the PDF Tool Kit [GNU GPL]
• pdfsam [GNU GPL]
• Xpdf [GNU GPL]
• GUIPDFTK [GNU GPL]
• PDFTOHTML [GNU GPL]
• LyX [GNU GPL]
• LaTeX:
  • MikTeX
  • fpTeX
  • TeXnicCenter
  • AucTeX [GNU GPL]
  • VIM-LaTeX [GNU GPL]
  • TeX Live
  • proTeXt
• WinDjView [GNU GPL]
• ganttproject [GNU GPL]
• Open Workbench [MPL]
• OpenProj
• Scribus [GNU GPL]
• gnumeric [GNU GPL]
• gnome office [GNU GPL]
• PowerTalk [GNU GPL]
• MathCast [GNU GPL]

Operating Systems

• FreeDOS [GNU GPL]
• FreeDOS-32 [GNU GPL]
• ReactOS [GNU GPL]
• Visopsys [GNU GPL]

PostScript viewers

• Ghostscript, Ghostview and GSview:
  • http://www.cs.wisc.edu/~ghost/
  • http://www.ghostscript.com/ [GNU GPL]

Programming

• Kiki [GNU GPL]
• Suneido [GNU GPL]
• Bloodshed Software (contains a lot of free compilers)
• DJGPP
• ActivePerl, ActivePython, ActiveTCL,...
• MinGW (Minimalist GNU For Windows)
• winGTK
• png2ico [GNU GPL]
• UMLet [???]

• Ada

• flat assembler [Other/Proprietary]
• NASM [GNU LGPL]
• WinDLX [Public Domain]

• FreeBASIC
• XBasic
• wxBasic
• ScriptBasic
• Yabasic [GNU GPL or Artistic License]

• gcc [GNU GPL]

• Lazarus [???]

• Open Watcom[Sybase Open Watcom Public License version 1.0]
• g95 [GNU GPL]
• GNU Fortran 95 [GNU GPL]

• Hugs 98
• Helium [GNU GPL]
• The Glasgow Haskell Compiler [Other/proprietary]

• Sun's Java [GNU GPL]
• jikes [IBM Public License]
• gcj [GNU GPL]
• Dependency Finder [BSD license]
• Ant [Apache License]

• Lua [MIT license]

• Prolog [GNU GPL]

• The Mono project
• DotGNU
• SharpDevelop [GNU GPL]

• Dev-Pascal [GNU GPL]
• Free Pascal
• Inno Pascal
• Lazarus [???]

• Perl

• PHP
• Dev-PHP [GNU GPL]

• GNU Prolog

• Python
• Python for Windows extensions
• PythonCard [BSD]

• Ruby [GNU GPL]

• PLT Scheme

• Dev-C++ [GNU GPL]
  • SourceForge page
  • Bloodshed page
• Ultimate++ [GNU GPL]
• NetBeans [SPL (Sun Public License)]
• Eclipse [CPL (Common Public License)]
• RHIDE
• WideStudio [MIT/X Consortiun Licence]
• ArgoUML [BSD license]
• Boa Constructor [GNU GPL]
• Code::Blocks [GNU GPL]

• Inno Setup [Other/Proprietary License]
• InstallJammer [MPL]
• FreeExtractor [Other/Proprietary License]
• Nullsoft Scriptable Install System
• UPX [GPL]
• WiX [CPL]

• GUI front-ends for CVS [GNU GPL]
• InnoCVS [GNU GPL]
• TortoiseCVS [GNU GPL]

• TortoiseSVN [GNU GPL]

• Boomerang [GNU GPL]
• JODE [GNU GPL]
• JReversePro [GNU GPL]
• DCompiler [GNU GPL]
• NASM [GNU LGPL]
• HelpDeco [???]

• GTK+ (GIMP Toolkit) [GNU LGPL]
• GTK+ for Windows [GNU LGPL]
• wxWindows
• The Fast Light Toolkit [GNU LGPL]
• gtkmm [GNU LGPL]
• SDL (Simple DirectMedia Layer) [GNU LGPL]
• wxPython [wxWindows License]
• WinPcap (Windows Packet Capture Library) [BSD]
• Little cms [GNU LGPL]
• Allegro [giftware]
• The GUI Toolkit, Framework Page
• Mesa3D [MIT-style license]
• G3D [BSD]
• VTK (The Visualization Toolkit) [Other/Proprietary License???]
• DirectP2P [GNU GPL or GNU LGPL] (development seems not to have started yet...)
• OpenPTC [GNU LGPL]
• Trivial Portable Framework Library [BSD, GPL, LGPL]
• FFmpeg [GNU LGPL]
• JWindows [GNU LGPL]
• Loris [GNU GPL]
• NTL [GNU GPL]
• Toolbar2000 [GNU GPL]
• IT++ [GNU GPL]
• Blitz++ [GNU GPL]

Remote access

• PCMan [GNU GPL]
• PuTTy
• MindTerm [Other/Proprietary License]
• Tera Term
• MSSH [GNU GPL ???]
• WeirdX [GNU GPL]
• RealVNC
• TightVNC
• TridiaVNC [GNU GPL] (discontinued)
• http://ultravnc.sourceforge.net/ [GNU GPL]
• EchoVNC [GNU GPL]
• BO2K [GNU GPL]
• Synergy [GNU GPL]

Sciences and Math

• OpenStat [???]
• Octave [GNU GPL]
• FreeMat [GNU GPL]
• Scilab
• Maxima [GNU GPL]
• wxMaxima [GNU GPL]
• SAGE
• Axiom
• SciCraft [GNU GPL]
• Yacas [GNU GPL]
• The R Project
• R Commander [GNU GPL]
• SciViews-R [GNU GPL]
• JGR (Java Gui for R) [GNU GPL]
• SciPy [BSD license]
• Rlab (no longer under active development)
• GAP [GNU GPL]
• MayaVi [BSD]
• PARI/GP [GNU GPL]
• Numerical Python [???]
• SalStat [GNU GPL]
• MacAnova [GNU GPL]
• Elmer [GNU GPL]

• GROMACS [GNU GPL]
• GENtle [GNU GPL]
• ClustalX
• GeneDoc
• E-Cell
• Open Bioinformatics Foundation
• BioPython
• BioPerl
• BioJava
• BioRuby
• BioSQL/OBDA
• BioMOBY
• BioDAS
• Artemis [GNU GPL]
• PyMOL [Python License (CNRI Python License)]
• OpenRasMol [Other/proprietary GPL]
• Bioconductor [BSD or GPL]
• Staden [BSD]
• AGM View [GPL]
• AGM Build [GPL]

• QGIS [GNU GPL]
• GRASS GIS [GNU GPL]
• MapServer [Mapserver License]
• GDAL [X/MIT style]
• OpenEV [X/MIT style]
• Thuban [GNU GPL]
• JUMP [GNU GPL]
• Virtual Terrain Project [VTP Software Licence]

Maybe there's more on the FreeGIS site, if you find stuff, please report it.

• Celestia [GNU GPL]
• OpenUniverse [GNU GPL]
• Stellarium [GNU GPL]
• GNUPlot
• Walnut [GNU GPL/LGPL]
• CopperCore [GNU GPL]
• Gwyddion [GNU GPL]
• Virtual Moon [GNU GPL]

Security, Privacy, Protection,...

• OpenAntiVirus
• Clam Antivirus
  • Clam AntiVirus [GNU GPL]
  • ClamWin Antivuris [GNU GPL]
  • ClamAV for Windows [GNU GPL]
• GnuPG [GNU GPL]
• Privoxy
• PINs
• GUIDClean
• AxCrypt [GNU GPL]
• Oubliette
• Stunnel [GNU GPL]
• Blowfish Advanced CS
• Stego [GNU GPL]
• Hide In Picture [GNU GPL]
• WinPT [GNU GPL]
• SSHTools [GNU GPL]
• KeePass [BSD License]
• Password Safe [Artistic License]
• SnareWindows [GNU GPL]
• TrueCrypt [???]
• Snare Micro Server [GNU GPL]
• Snare agent for Lotus Notes [GNU GPL]
• Snare for IIS [GNU GPL]
• Snare for ISA [GNU GPL]
• Winpooch [GNU GPL]
• Tor
• PeerGuardian 2

Server software

• Zope [Zope Public License]
• Plone [GNU GPL]
• NetServer [GNU GPL]
• XAMPP [GNU GPL]

• CVSNT [GNU GPL]

• Dual DHCP DNS Server [GNU GPL]

• Posadis [GNU GPL]
• Dual DHCP DNS Server [GNU GPL]

• FileZilla server
• War FTP Daemon (Version 3) (still very alpha-code!)
• AnomicFTPD [GNU GPL]
• Pure-FTPd [GNU GPL]

• Ident server [BSD]

• jabberd [JOSL and GNU GPL]
• ejabberd [GNU GPL]
• Jive Messenger [GNU GPL]
• OpenIM [BSD]

• Enhydra [Enhydra Public License]

• Hamster (Classic)
• XMail
• shicks! [BSD]
• hMailServer [GNU GPL]

• Apache
• Xitami
• Savant [GNU GPL]
• MyServer [GNU GPL]
• Jigsaw [Other/Prorpietary]
• Analog [GNU GPL]

• OpenNap [GNU GPL]
• SlavaNap [GNU GPL]

• WinNFSd [GNU GPL]
• SOSSNT [GNU GPL]

• OpenSSH
• copSSH (different Open Source licenses)

• MRTG (Multi Router Traffic Grapher)
• Squid Web Proxy Cache

SCP (SecureCoPy) clients

• WinSCP
• Secure iXplorer GPL [GNU GPL]

Stream Downloaders

• gmms [GNU GPL]
• mmsclient [GNU GPL]
• JavaMMS [GNU GPL]
• StreamRipper [GNU GPL]
• StationRipper [GNU GPL]
• ASFRecorder [Public Domain]

Text editors

• Vim
• GNU Emacs [GNU GPL]
• XEmacs
• Scintilla and SciTE
• jEdit [GNU GPL]
• Jext [GNU GPL]
• WinVi [GNU GPL]
• syn
• SynEdit [LGPL, MPL]
• Cream
• SETEdit
• ht editor [GNU GPL] (for binaries)
• TeXmacs [GNU GPL]
• Notepad++ [GNU GPL]
• Notepad2 [GNU GPL]
• UniRed [GNU GPL]
• poEdit [MIT]
• Programmer's Notepad [BSD]

Utilities

• PhotoRec
• Cobian Backup [MPL]
• AutoHotkey [GNU GPL]
• agsm [GNU GPL]
• Partition Logic [GNU GPL]
• g4u [BSD]
• Daphne [GNU GPL]
• MD5summer [GNU GPL]
• RapidCRC [GNU GPL]
• GParted [GNU GPL]
• Hasher [???]
• zphoto [GNU LGPL]
• Thotor [GNU GPL]
• TxtPrint [GNU GPL]
• e7NoteIt [GNU GPL]
• Jigsaw Download (jigdo) [GNU GPL]
• floAt's Mobile Agent [GNU GPL]
• WinDirStat[GNU GPL]
• Woo Shell [Public Domain]
• JOCR [GNU GPL]
• HovText [BSD]
• Sayz Me [BSD]
• Bid-O-Matic [GNU GPL]
• ctPhotoBook [Other/proprietary License]
• Abakt [GNU GPL]
• Really Slick Screensavers [GNU GPL]
• RAMpagew [Other]
• IESpy [Other/Proprietary License]
• DiskWrite [GNU GPL]
• GNU utilities
• Cygwin
• HTMLDOC
• WinMerge
• KDiff3 [GNU GPL]
• MP3Ext
• smartision ScreenCopy
• Memtest86 [GNU GPL]
• WCD (Wherever Change Directory) [GNU GPL]
• TreeLine [GNU GPL]
• Eraser [GNU GPL]
• VirtuaWin [GNU GPL]
• Live View [GNU GPL]
• Win2VNC [GNU GPL]
• tofrodos [GNU GPL]
• Bookmark Manager [GNU GPL]
• BookmarkBridge [GNU GPL]
• Internet Junkbuster [GNU GPL]
• Unison [GNU GPL]
• Ant Renamer [GNU GPL]
• Ant Movie Catalog [GNU GPL]
• dKopie [???]
• GREP [GNU GPL]
• AstroGrep [GNU GPL]
• Notebox Disorganizer IIe [Public Domain]
• TestDisk [GNU GPL]
• smartmontools [GNU GPL]
• jUploadr [GNU GPL]
• xpy [GNU GPL]
• openbarcodes and its SourceForge project page [GNU GPL]
• Bar code generator [GNU GPL]
• pySIM [GNU GPL]

Video capture/processing

• Dr. DivX [GNU LGPL]
• DScaler [GNU GPL]
• VirtualDub [GNU GPL]
• VirtualDubmod [GNU GPL]
• Virtual VCR
• AviSynth [GNU GPL]
• CinePaint [GNU GPL]
• DVD2AVI [GNU GPL] (link dead, what is new official link?)
• AVI-Mux GUI [GNU GPL]
• Avidemux [GNU GPL]
• Filters and tools by Donald Graft [GNU GPL]
• DVDx [GNU GPL]
• Gordian Knot [GNU GPL]
• CamStudio [GNU GPL]
• DivFix [GNU GPL]
• FreeVCR [GNU GPL]
• Taksi [BSD]
• NanDub+BRC
  • NanDub+BRC
  • NanDub+BRC Source code
  • official site
• VCDImager [GNU GPL]
• DVD Master Backup [GNU GPL]
• YAAI (Yet Another Avi Info [GNU GPL]
• MediaInfo [GNU GPL, LGPL]
• DivXRepair [GNU GPL]
• mpgtx [GNU GPL]
• HGRip [GNU GPL]
  • sources
  • binaries
• MKVToolnix [GNU GPL]
• SmartRipper [GNU GPL] (the official site appears to have no content...???)
• vstrip [GNU GPL]
• QuEnc AVS->MPEG Encoder [GNU GPL]
• ReJig and it's source code [GNU GPL]
• DVD2AVIdg/MPEG2DECdg Decoding Fix [GNU GPL]
• ChapterXtractor and it's sources [GNU GPL]
• SubRip [GNU GPL]
• MMConvert [GNU GPL]
• ShrinkTo5 [GNU GPL]
• DVDStyler

VJ Software

• gephex [GNU GPL]
• OpenTZT [GNU GPL]
• Video effector [GNU GPL]
• Whorld [GNU GPL]

Web browsers

• Mozilla [NPL/MPL/LGPL/GPL]
• Mozilla SeaMonkey [MPL, NPL]
• Flock [MPL, GPL]
• Beonex Communicator
• K-Meleon
• Firefox
• Lynx (text based!) [GNU GPL]
• Links (text based!) [GNU GPL]
• w3m (text based!) [MIT license]
• AKiller [GNU GPL] (popup killer)

Webcam

• Dorgem

Web editors

• Nvu [MPL/LGPL/GPL]
• Amaya
• Mozilla [NPL/MPL/LGPL/GPL]
• Mozilla SeaMonkey [MPL, NPL]
• HTML Tidy [W3C license]
• JTidy [Other/proprietary license]
• Blue Ice (and its source code) [GNU GPL]
• JGenerator [GNU GPL]
• DRKSpider [GNU GPL]
• KompoZer [MPL, GPL, LGPL]
• ASPForums [GNU GPL]

Webgrabbers and Download Managers

• wget [GNU GPL]
• webfetch [BSD]
• curl [MIT/X derivate license]
• HTTrack [GNU GPL]
• Leech [MPL] (is a Mozilla add-on)
• WackGet [GNU GPL]
• Getleft [GNU GPL]
• QuickDownloader [GNU GPL]
• FlashGot [GNU GPL]
• TrueDownloader [GNU GPL]
• wxDownload Fast [GNU GPL]

X-servers

• Cygwin/Xfree86
• WeirdX
• Win32-X11

Others

• Nutch [Apache License]
• KnowQuick [GNU GPL]
• OmegaT [GNU GPL]
• Pears [GNU GPL]
• WinLIRC
• KeyNote
• The Scrolling Game Development Kit [GNU GPL]
• MadMovies [GNU GPL]
• NewName [GNU GPL]
• TextState [GNU GPL]
• WinPenguins [GNU GPL]
• Ariadne [GNU GPL]

Last Update: March 6th, 2008