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)   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,