Open-source and free software

[Sam_Zen]

After years I found a .RA to something else converter, while you don't need the whole Real machine on board:
MediaCoder - 15 Mb - Open source.

[DMNXS]

Well, I'll add what I use nowadays, since I'm actually running a productive Linux system (but no tracker, though):

(I'll edit it with HTML later on with all the websites - right now I have HTML support off)

Linux:
Midnight Commander - awesome command line (!) file manager, clone of the Norton Commander for DOS, with many functions (like ftp support and mouse support in emulated shells and in real ones with mouse servers running)
//www.blender.org - cool 3d-modelling, animation and rendering suite
//www.yafray.org - the appropriate raytracer
XChat - great IRC client
WebDownloader4X - nice download manager, though not as good as it's windows counterparts (yet)
MPlayer - video file player
XMMS - audio file player, designed like winAmp 2.x also with mod support through libmodplug
- more to come -

Windows:
- will be added later -

EDIT:
removed unfitting entries

[Diamond]

As usual all of these are free.

GuildFTPd - FTP server for Windows with a lot of features
http://www.guildftpd.com/
HTTrack - Copies entire websites
http://www.httrack.com/
MJ Registry Watcher - Monitors registry keys and files for changes
http://www.jacobsm.com/mjsoft.htm
Restoration - Undelete utility
http://www.geocities.jp/br_kato/
RunWithParameters - Context menu add-on to run executables with parameters
http://rwparam.whyeye.org/
PhraseExpress - Automatically expand abbreviations while typing
http://www.phraseexpress.com/

[Sam_Zen]

2 DMNXS
Norton Commander was the inspiration for Midnight Commander (Linux) as well as for Total Commander (Windows). So TC could be called an equivalent of MC. (I admit that TC is not open source or freeware, but nagware)

[Diamond]

WAssociate - Allows you to modify file associations and the context menu
http://www.xs4all.nl/~wstudios/Associate/index.html

[Diamond]

AmbiLoop - Load up to 8 WAV files and combine them/change their tempo to create new loops
http://evenfall.com/ambiloop/
VstSeq - Create patterns up to 8 measures long using any VSTi and save them to WAV for use in your projects
http://pquenin.free.fr/pqnaudio/

[speed-goddamn-focus]

WINK is a great piece of software for creating screenshot based FLASH, EXE, HTML or PDF tutorials.

[residentgrey]

MetaPad - Notpad replacement.
ZynAddSubFX - Kickass multisynth, hopefully teh VSTi will be re-released, if some would light a fire under the devver
Expression Tone Generator - from VoiceSync, old-school math based synth.
HammerHead Rythm Studio - drumbox/sequencer.
SimSynth - old school synth (heh win3.1)
TS-404 - Multitimbral synth, creates short .raw loops useable with MPT, MUST USE 16-BIT SIGNED FORMAT (third option fuzzy right now).
Anim8or - 3d Modeler/Scene editor, kickass prog IMHO.
xoblite/bb4win/bblean/bluebox - kickass alt. shells for windows, i use xoblite B) .
DrumSynth2 - self-explanatory.
Calenz - customizable calendar.
FreeNote - (donationware) post-it app.
more laterz, must sleep

zzz

[Diamond]

HFS - Http File Server
http://www.rejetto.com/hfs/
Hotstepper - Free Drum Machine with 12 channels and WAV export
http://hotstepper.de/
I can't believe I forgot about that one.  Probably the best freeware Drum Machine I've seen so far.

[Diamond]

AVI to WAV - Extract audio from AVI files
http://agrgic.tripod.com/avi2wav/
HarddiskOgg - Line-In to OGG/MP3/APE/WAV recorder
http://www.fridgesoft.de/harddiskogg.php
RTEQ - Real time equalizer
http://members.aon.at/grxpage/

[Diamond]

All-Purpose Spell Checker - Universal spell checking for all applications
http://www.math.mcgill.ca/rags/apscinst.exe
My AutoHotkey script to automate the process of getting text from and back into edit fields for the spell checker
http://www.autohotkey.com/forum/viewtopic.php?t=12614&highlight=

[alpharomeo81]

What happened to sound engine?
Is there any english version...

[Diamond]

nLite - Deployment Tool for the bootable Unattended Windows installation
http://www.nliteos.com/
ZaraRadio - Radio automation software
Most of the page is in Spanish, but the program is in English.  There's also an older version which supports Winamp DSP plugins.  For some reason they got rid of this feature in the latest versions, but if anyone wants to try it let me know and I'll post a download link.
http://www.zararadio.com/index.php?centro=descargas.php

[DMNXS]

What happened to sound engine?
Is there any english version...

You mean //www.cycleof5th.com?

Heh, they actually updated! Too bad it's not in english yet, though (try */en for the old english version )

[Sam_Zen]

I'm quite surprised (sorry if I overlooked) to see the absence of XMPlay here so far. It's a versatile player for all kinds of module-formats, with a lot of info-data showing. Even patterns are showed.
It can also save as Wav, included the playback-settings, as MPP can.
Playback of the OGG-format. Here are the plugins to handle FLAC and MIDI too.