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MD5 File and Folder Comparator 7.24
Click on the title for the full description

US$11.95, €9.75 or £8.75 for a perpetual license
or US$3.95, €3.25 or £2.95 for a 3-month license

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Compares the MD5 digital signatures of two files to determine whether or not they are identical. Also ompares all files in each of two folders.
 
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Radian-Degree Calculator 5.44
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US$17.95, €14.75 or £13.25 for a perpetual license
or US$5.95, €4.95 or £4.45 for a 3-month license

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A program to convert radians to and from degrees, minutes and seconds (optionally in decimal form) and to perform addition and subtraction of angles.
 
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Prime Factors 14.37
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US$11.95, €9.75 or £8.75 for a perpetual license
or US$3.95, €3.25 or £2.95 for a 3-month license

Purchase a lcense
 
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A program to find prime numbers and pairs of primes, to decompose numbers into their prime components, to find all factors of any positive integer up to 2,147,483,645, and to plot Erdos-Kac and Palmen Color histograms.
 
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These programs run under all versions of Windows from Windows XP to Windows 10. The freely downloadable trial versions can be made fully-functional by means of an activation key available after purchase of a user license. Updates to new versions (if any) are free, as is tech support for the duration of the user license.
 
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