What's on the Hermetic Systems Website

Text Analysis Software   Encryption and Security   Calendar Software
Calendar Studies   Computational Science   C Programming

This website provides Windows desktop software and many articles about calendar systems and other subjects. Listed below are partial contents of the main sections (click on the section headings to see the full contents of each).

Text Analysis Software
  • Hermetic Word Frequency Counter
    Scans a text file or a Word docx file and counts the occurrences of different words. The words found can be displayed alphabetically or by frequency.

  • Hermetic Word Frequency Counter Advanced Version
    Scans one or more docx, text or text‑like files (e.g. HTML and XML files) and counts the occurrences of different words or phrases (optionally with pattern matching).

  • Phrase Frequency Counter Advanced
    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 phrases. The phrases found can be displayed alphabetically or by frequency, and can be searched for sub-phrases.

  • Search KWIC Concordance
    A program to scan a text file or an MS Word docx file to generate a KWIC (keywords‑in‑context) concordance which can then be searched for specified words or word patterns.

Encryption and Security

  • Cryptosystem ME6
    An encryption program which uses a symmetric key encryption algorithm (with 500‑bit keys) to encrypt information in files for secure storage or transmission.

  • Email Encryption End‑to‑End
    A program for sending and receiving encrypted email messages (optionally with attached file). It uses a symmetric key method and works with any email program. Bilingual, English/German.

  • Data Destroyer
    A program to wipe single or multiple files, that is, to overwrite their contents so that the data in them cannot be recovered.

  • File Backup Lite
    An easy‑to‑use program to back up new and modified files in selected folders and subfolders.

Calendar Studies

Calendar Software

  • Easy Date Converter
    A conversion program which gives you the day of the week for a date, the Julian day number and more, and allows date arithmetic: adding a number of days to a date, etc., with or without inclusion of weekend days. In English and German.

  • The Kazakh Nomad Calendar
    Software for converting between dates in the Kazakh Nomad Calendar and dates in the Gregorian Calendar.

  • Chinese Calendrics
    Software for converting between Chinese and Western dates and for obtaining other information such as the dates of Chinese New Year's Day for any year.

  • Lunar Calendars and Eclipse Finder
    Software for conversion among dates in the Common Era and Julian Calendars and dates in several lunar calendars. The program also finds the dates, times and durations of solar and lunar eclipses.

  • Equinoxes, Solstices and Cross‑Quarter Days
    For calculating accurate dates and times of equinoxes, solstices and the Celtic cross‑quarter days for any year in the range 1 CE through 3000 CE (for both hemispheres). Full VB6 source code available.

  • Julian‑Gregorian‑Dee Date Calculator
    Converts between Julian, Gregorian, Dee and Dee‑Cecil calendar dates in various formats, and adds and subtracts a number of days, weeks, months and years to or from a given date.

  • Mayan Calendrics
    Converts among Maya and European dates in various calendar systems.

  • Printable Calendar
    A modest utility to help you keep track of things to do.

  • The Hermetic Leap Week Calendar in Year‑Month‑Day Form
    An online display of each month in any selected year (2007‑2040) in the Hermetic Leap Week Calendar

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