Deep Data Loops
StereoTool offers ultra-precise control of input gain and individual pan for left and right channels, accurate visual feedback reflecting the signal content with; a vector scope, PPM meters for inputs/outputs, phase correlation meter permanently monitoring the signal and individual left and right polarity reversal – No dongle or registration required – 100% Freeware!
Vovoid VSXu is many things – a music or audio visualizer displaying real time graphics to your audio or music. It is also a modular visual programming language with which you can quickly build and explore real time graphics effects and designs. VSXu’s underlying code can be re-used in other projects and is optimized for real time graphics and games. Grab it for free.
Signalizer is a free all-in-one signal visualizing package from Janus Lynggaard Thorborg with a bunch of unique focus-points; real-time audio visualization with optimized 3D GPU graphics
Nice and free Oscilloscope for Win, Mac OS X and Linux. Click Pick.