DigiFilter is a simple application for digital FIR filter design. Filter frequency response is not limited to typical lowpass, highpass, bandpass and bandstop. It can be graphically designed to any shape instead. The program uses windowing technique with rectangle, triangle, Blackman and Kaiser windows. Maximum number of taps is 2048. Both designed frequency response and set of calculated tap multipliers may be saved to a file. DigiFilter is available in the download section and on Aminet. The program is freeware.