FiltersCAD

> the complete filters design solution for improving personal productivity in a timely and cost efficient manner.
 > you can design lowpass, highpass, bandpass and notch filters with a variety of responses, including Butterworth, Chebychev, Inverse Chebychev and Elliptic.

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Talker English Dictionary

> gives you instant access to an invaluable reference book directly from Windows.
 > in addition to all the techniques you would use with a printed book (looking up a word, browsing, etc.) it enables you to carry out in seconds and you can hear the sound of texts (words, definition, etc).

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Israel calendar

> displays and generate common (Gregorian) and Jewish (Hebrew) calendar dates.
 > the cover years are 900: Gregorian 1600-2500, Hebrew 5360-6260.
 > calculates sunrise and sunset for every calendar day at over 8000 locations worldwide.

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