Alternatives to OpenFrameworks

Before being introduced to OpenFrameworks, I spent some time looking into software packages that would allow me to create nice visuals and UI elements while still allowing for relatively serious mathematical processing. In particular, I needed something with basic DSP routines (FFT, IFFT, etc), and matrix mathematics libraries.  If you happen to be in a similar boat, and haven't heard of these packages...

(update: It was recently pointed out to me that Cinder is probably the most closely related alternative to OF if you are interested in the C++ route)

For the maths:
Matlab
Mathematica
Python + Numpy + Scipy
iOS 4 with the Accelerator Framework
Processing + JAMA library
MAX/MSP with FTM library

Easy GUI creation, plotting and drawing APIs:
iOS4
Processing
Flash/Flex
MAX/MSP
Python + MatPlotLib
Mathematica

Easy access to serious audio output/input libraries:
- MAX/MSP
- Flash/Flex + Tonfall Library
- ChucK

Please comment if you know of any similar tools