1)   Rainbow 5.11.5
Find best Spectral Estimation Method for a Power Spectral Density plot. A menu of 10+ spectral estimators from Steve Kay's textbook 'Modern Spectral Estimation' 1988 is available to choose from. Some estimator results differ dramatically!
Power Spectra, PSD, Spectral Estimation, spectral analysis, Spectrum, Fourier transform, FFT,

 2)   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,