Wave Editor
http://www.wave-editor.com/

Free Audio Editor 2009
http://www.free-audio-editor.com/

hears some i found

Power Sound Editor - http://www.free-sound-editor.com/
Music Editor Free - http://www.music-editor.net/
Wavosaur - http://www.wavosaur.com/
Traverso DAW - http://www.traverso-daw.org/
Ardour - http://ardour.org/
Rosegarden - http://www.rosegardenmusic.com/
WavePad Sound Editor - http://www.nch.com.au/wavepad/index.html
Sound Engine - http://www.cycleof5th.com/products/soundengine/...
Expstudio Audio Editor - http://www.expstudio.com/audio-editor-free.html
DJ Audio Editor - http://www.program4pc.com/dj_editor.html
Eisenkraut - http://sourceforge.net/projects/eisenkraut
Ecawave - http://www.eca.cx/ecawave/
Jokosher - http://www.jokosher.org/
LMMS - http://lmms.sourceforge.net/
Wavesurfer - http://www.speech.kth.se/wavesurfer/
Sweep - http://www.metadecks.org/software/sweep/

i hope thats enough lol

wave pad sound editor its has a free trial but once its over it still works

Please provide a link

Ardour
http://ardour.org/

AVS Audio Editor and sweep

Please provide a link

I dont know if this program is anygood but it looks like and okay program its called (free audio editor 2009)
here's the link:
http://www.free-audio-editor.com/