1)   SignalLab VC++ 5.0.1
The SignalLab is a set of Visual C++ components for fast Digital Signal Processing (DSP) and data visualization. Allows fast complex signal manipulations with zero lines of program code. Free for non-commercial use.
DSP, Digital Signal Processing, Signal Processing, FFT, DFT, Goertz, Fourier, FIR, IIR, DCT,

 2)   SignalLab VCL 5.0.1
Delphi/C++ Builder VCL/FMX components library for fast Digital Signal Processing (DSP) and data visualization. Allows fast complex signal manipulations with zero lines of program code. Free for non-commercial use.
DSP, Digital Signal Processing, Signal Processing, FFT, DFT, Goertz, Fourier, FIR, IIR, DCT,

 3)   2D FFT/iFFT plugin 1.0
User-friendly 2D FFT/iFFT (Fast Fourier Transform) plug-in for Adobe PhotoShop compatible plug-in hosts. It uses one of the fastest implementations of the Discrete Fourier Transform and has many applications including periodic noise removal etc.
FFT, Fast Fourier Transform, Fourier Transform, Fourier, Transform, plugin, photoshop,

 4)   SignalLab .NET 5.0.2
The SignalLab is a set of .NET 2.0-4.0 components for fast Digital Signal Processing (DSP) and data visualization. Allows fast complex signal manipulations with zero lines of program code. Free for non-commercial use.
DSP, Digital Signal Processing, Signal Processing, FFT, DFT, Goertz, Fourier, FIR, IIR, DCT,