UBC Max/MSP/Jitter Toolbox
Just came across the UBC Max/MSP/Jitter Toolbox which seems to be quite similar to Jamoma. The UBC Max/MSP/Jitter Toolbox is a collection of modules for creating and processing audio in Max/MSP and manipulating video and 3D graphics using Jitter. I have just briefly tested it, and here are some screenshots from one of the example patches.
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