Hermetic Systems — PC Software for Intelligent People
Hermetic Systems offers more than twenty items of Windows software concerning calendar date conversion, word/phrase counting, file and email encryption, eclipse prediction and other topics. These either help you do what you want to do, allow you to do what you had not thought of before, provide you with useful or engaging information or simply entertain you. The software is listed below (click on a title or a thumbnail image for more information). See also Software Ordered by Category. This website also has many informative articles concerning calendars, encryption, computational science and other topics (see the title index).

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Cryptosystem ME6

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.



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Index Files Search Words

For indexing and searching multiple text files, HTML files, XML files or files of a similar type in multiple folders on a hard disk, memory stick, CD-ROM or similar storage medium.



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Factorizer

A program to find prime numbers and pairs of primes, to decompose numbers into their prime constituents, 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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Equinoxes, Solstices and Cross-Quarter Days

Calculates accurate dates and times for equinoxes, solstices and cross-quarter days.



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Easy Date Converter

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



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Data Destroyer Disk Wipe

A hard drive cleaner which overwrites many times data in the free space on a disk and in all files and folders (except selected top-level files and folders) so that the data cannot be recovered. The type of purge is specifiable, and the program provides an estimate of the time needed for the disk wipe.



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Hermetic File Monitor

This program is for detecting changes to files in a folder, and for detecting additions or deletions of files in a folder. Multiple folders can be set up to be monitored. Optionally files in all subfolders of a folder can also be monitored.



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Chinese Calendrics

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.



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Hermetic Word Frequency Counter

This software scans a file, or text on the clipboard, and counts the number of occurrences of the different words. The words which are found and displayed can be ordered alphabetically or by frequency. Supports non-English text.



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MD5 File and Folder Comparator

Compares files, and files in folders, as to whether they are the same or different.



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Keywords Meta Tag Generator

A web authoring tool which acts on an HTML document, counting the number of occurrences of words and how they are used, and produces an appropriate keywords meta tag for the document (which can be automatically inserted into the document).



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Hermetic Stego

This program allows you to encrypt and hide a file of any size in one or more BMP image files, with or without the use of a user-specified stego/encryption key, so that the presence of the hidden file is undetectable, even by forensic software using statistical methods.



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Modified File Backup

Software to back up files in a folder and selected subfolders of that folder; all files, or just new and modified files, can be backed up. Can delete obsolete backup files.



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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.



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Data Destroyer

A program for secure file deletion and disk wipe which destroys (or purges, by overwriting many times) data in multiple files and multiple folders on floppy, ZIP drive, hard disk or memory stick so that the data cannot be recovered. Single-file or batch-mode operation. User-specifiable purge type. Estimates of purge time given.



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Lunar Calendars and Eclipse Finder

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.



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Mayan Calendrics

Software for conversion among Maya (tzolkin, haab, long count) and European (Gregorian, Julian) calendar dates.



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Easy HTML Construction Kit

This program includes an interactive TABLE generator which handles COLSPAN and ROWSPAN, and provides an easy way to create HTML code from lists and tables in textfiles, and to convert data in textfiles to finished HTML documents.



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Prime Number Spiral

Software for exploring the Prime Number Spiral (a.k.a. the Ulam Spiral), which is formed by marking the prime numbers in a spiral arrangement of the natural numbers. Bilingual: English and German



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Easy Email Encryption Lite

A program to encrypt a message to send by email, and to decrypt encrypted messages received. Using this 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.



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Easy Graphics File Converter

Software to convert from GIF, JPG, PNG and BMP graphics files to JPG, PNG and BMP files. Allows single or multiple (batch) file conversion. Can convert to JPGs over a range of quality/compression values for optimization. Converted files can be displayed in your browser.



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Hermetic Sitemap Builder

Scans a copy of your website on your hard disk and generates either an HTML sitemap or an XML Sitemap.

 

Chinese Calendrics

Cryptosystem ME6

Data Destroyer

Data Destroyer Disk Wipe

Easy Date Converter

Easy Email Encryption Lite

Equinoxes, Solstices and C-Q Days

Factorizer

Graphics File Converter

Hermetic File Monitor

Hermetic Sitemap Builder

Hermetic Stego

HTML Construction Kit

Index Files Search Words

Julian-Gregorian-Dee Dates

Keywords Generator

Lunar Calendars

Mayan Calendrics

MD5 File and Folder Comparator

Modified File Backup

Prime Number Spiral

Word Frequency Counter

Most of these programs (all written for Windows PCs but they can also be run on Macs with a Windows XP emulator) can be downloaded as trial or demo versions, which can be converted to fully-functional after purchase of a user license. For prices and current version numbers for all programs click here.  Technical support is available from support@hermetic.ch.

Discounts: For PayPal purchasers a discount of 32% - 48% is possible by ordering three or more programs.

The contents of this website include relevant articles as well as the user manuals for the software.

Calendar Studies

Computational Science

C Programming

Cryptography and Security

Date/Calendar Software

Mathematical Software

Below are direct links to various pages on this site. You can also search this site.

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