Windows software for word and phrase counting, file and email encryption, secure file deletion, calendar date conversion and more

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Hermetic Systems publishes 12 items of Windows software in diverse fields — those above plus others. Titles of our programs are shown below (click on any for the full description, user manual, prices and how to order). Or for a quick overview of our products visit our Software Shop.

Word- and Phrase-Counting Software
Hermetic Word Frequency Counter
Scans a text file or a Word docx file and counts the frequency of occurrence of different words.
Hermetic Word Frequency Counter Advanced Version
Scans multiple docx, text or text-like files (e.g. HTML and XML files) and counts the frequency of occurrence of different words or phrases (optionally with pattern matching).
Security Software: Encryption, Deletion and Backup
Cryptosystem ME6
A program for the encryption and decryption of single or multiple files
Data Destroyer
Destroys, by multiple overwrites, data in multiple files and folders
Stego PNG
Hides a data file of any type in a PNG or BMP image file
Backup Modified Files
Backs up files in a folder and selected subfolders of that folder
Email Encryption End‑to‑End
Encrypts messages to send by email and decrypts encrypted messages received
Date Conversion and other Calendar Software
Lunar Calendars and Eclipse Finder
Searches for eclipses, calculates Moon phases, converts lunar calendar dates
Chinese Calendrics
Converts between dates in various Chinese calendars and dates in Western calendars
Julian‑Gregorian‑Dee Date Calculator
Converts between Julian, Gregorian, Dee and Dee‑Cecil calendar dates
Easy Date Converter
Does date conversion and date arithmetic for various Western calendars
Equinoxes, Solstices and Cross‑Quarter Days
Calculates dates/times of vernal/autumnal equinoxes, summer/winter solstices and Celtic cross‑quarter days

These programs run under all versions of Windows from Windows XP to Windows 10. All are completely malware-free (as confirmed by the VirusTotal link on each product page). The free trial versions can be made fully-functional by means of an activation key after purchase of a user license. The key can be sent immediately upon purchase (or can be obtained immediately after purchase), so there's no waiting required. For some programs you can purchase either a 3-month license, a 1-year license or a perpetual (i.e., lifetime) license. (Site licenses are available for some programs.) Updates to new versions are free, as is tech support for the duration of the user license.

This website also has many articles about calendars, cryptography and other topics.

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Latest news or addition: A new version of Hermetic Word Frequency Counter Advanced
which displays relative frequencies as well as absolute frequencies.

I do believe that Hermetic Systems is the GOLD Standard in customer service and performance!Denise Ventura, January 16, 2008

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