Hermetic Systems

Windows software for text analysis, file & email encryption, file backup & deletion, calendar date conversion and more.

These Windows desktop programs are hand-crafted for functionality and ease‑of‑use. For full descriptions click on the program titles.

This page has, for each program, a link to PayPal and to Digital River for purchase of a perpetual (time-unlimited) user license. For some programs licenses are available for use of the software for 3 months or 1 year. To purchase a time-limited user license, click on the program title to go to the product page and follow the 'Purchase' link.


Search KWIC Concordance

US$49.25, €45.25 or £38.25 

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A program to scan a text file, an HTML file or an MS Word docx file, ignoring stop words, to generate a KWIC (keywords-in-context) concordance which can then be searched for words or word patterns.
 

File Backup Lite

US$19.75, €17.95 or £15.25 

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Software to back up selected files and folders (and their subfolders). All files, or just new and modified, are backed up. Backup operations can be saved in setup files for re-use.
 

Backup Modified Files

US$39.45, €36.25 or £29.95 

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Testimonials
 
Software to back up files in all (or selected) folders and their subfolders; all files, or just new and modified. Backup operations can be saved in setup files. Program is network-compatible. Can be run via Task Scheduler with optional auto shutdown.
 

Chinese Calendrics

US$49.25, €45.25 or £38.25 

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Testimonials
 
A program to convert between dates in various Chinese calendars and dates in the Gregorian and Julian calendars, and to find (among other things) lunar new year's day and leap months for any year in the Chinese Calendar.
 

Lunar Calendars and Eclipse Finder

US$19.95, €18.25 or £15.45 

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Testimonials
 
A program to search for eclipses (lunar, solar, total, annular and partial), to calculate the phase of the Moon at any given date and time and to convert between dates in the Gregorian and Julian calendars and dates in various lunar calendars: Meyer-Palmen Solilunar, Hermetic Lunar Week, etc.
 

Equinoxes, Solstices and Cross‑Quarter Days

US$17.95, €16.45 or £13.95 

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Testimonials
 
Software to calculate accurate dates and times for equinoxes, solstices and the Celtic cross-quarter days. The cross-quarter days are those midway between the equinoxes and solstices.
 

Julian‑Gregorian‑Dee Date Calculator

US$19.95, €18.25 or £15.45 

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Testimonials
 
Converts between Julian, Gregorian, Dee and Dee-Cecil calendar dates in various formats, adds/subtracts a number of days, weeks, months and years to/from a given date, and calculates northern spring equinoxes using either mean or apparent solar time.
 

Easy Date Converter

US$19.95, €18.25 or £15.45 

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Testimonials
 
Adds a number of days or months to a date, calculates the number of days between two dates (with or without weekend days), and converts among Common Era (Gregorian) dates, Julian dates, ISO 8601 Week dates, Hermetic Leap Week dates, Julian day numbers and day-in-year dates of the form yyyy-ddd. Bilingual: English and German
 

Hermetic Word Frequency Counter

US$49.25, €45.25 or £38.25 

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Testimonials
 
This software scans a text file, a HTML file, an XML file or a Word DOCX file and counts the frequencies of different words. The words which are found and displayed can be ordered alphabetically or by frequency. There is no limit on the size of an input text file. Results can be written to a file and can be read into Excel for further processing.
 

Hermetic Word Frequency Counter Advanced Version

US$78.95, €72.25 or £60.95 

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Testimonials
 
Scans one or more MS Word DOCX, text or text-like files (e.g. HTML and XML files) and counts the number of occurrences of different words or phrases (optionally with pattern matching). The words/phrases can be displayed alphabetically or by frequency. Works with text in most European languages.
 

Email Encryption End‑to‑End

US$49.25, €45.25 or £38.25 

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A program to encrypt a message to send by email, and to decrypt encrypted messages received. Using this program ensures that email is encrypted before it is transmitted to your mail server and remains encrypted until after downloading by the recipient. Bilingual: English and German.
 

Data Destroyer

US$39.75, €36.45 or £30.95 

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Testimonials
 
A program for secure file deletion which overwrites data in specified files so that the data cannot be recovered by any means. A single file can be purged or, in batch mode, multiple files. Selected subfolders of a folder can be purged. The user can specify the type of purge. Purge speed can be tested for an estimation of time required. Can wipe files older than a specified date.
 

Hermetic MultiFile Search

US$39.25, €35.95 or £29.95 

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This software is for indexing docx files, text files, HTML files, XML files or files of a similar type in multiple folders and their subfolders to allow subsequent rapid searching of those files.
 

Cryptosystem ME6

US$49.25, €45.25 or £38.25 

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Testimonials
 
A program for the encryption and decryption of single or multiple files for secure storage or transmission. It uses a symmetric key encryption method with a 500-bit key for security, and has numerous safeguards against user error.
 

These programs run under all versions of Windows from Windows 98 to Windows 10. The software (after download) can be made fully-functional by means of an activation key sent by email 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.