WaveShop - Open source audio editor
What Font Is - Find any font from any image (commercial or free)
TwistedWave - TwistedWave is one of the unique audio editors that allow you to edit your music file online without any installation.
AMP Font Viewer - Jump to Download - Download.
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Font Viewer - Font Viewer is an application which does exactly that - it views fonts!