The Prime Number Spiral (a.k.a. the Ulam Spiral) is formed by marking the prime numbers in a spiral arrangement of the natural numbers. This is software is for exploring the Prime Number Spiral.

Cryptosystem ME6 is a Windows program which uses a symmetric key encryption system to encrypt information in either a single file or in multiple files (at once) so that it cannot be read by those not knowing the key. Data is encrypted using a key which is from 16 to 64 characters long, and which can be either a phrase or a sequence of 64 random bytes (the software provides a way for you to generate such random keys).

This program acts on an HTML document, counting the number of occurrences of words and how they are used, and produces a keywords meta tag for the document. It ignores common words such as 'this', and the resulting meta tag depends on user-specified weights assigned to boldface words, etc. It can be used with documents which use cascading style sheets or which have lots of embedded javascript, and it works with non-English text such as Spanish.

Factorizer may be used: (1) to get the prime decomposition of all numbers in a range of numbers (2) to get all factors of a single number or all factors of all numbers in a range (3) to find only the prime numbers in a range of numbers (4) to find pairs of prime numbers (e.g. 107 and 109) in a certain range (5) to count (without displaying) the prime numbers in a range of numbers (6) to find Fermat and Mersenne primes < 2,147,483,647

A program to search for eclipses (lunar, solar, total, annular and umbral), 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 four lunar calendars (Goddess Lunar, Meyer-Palmen Solilunar, Hermetic Lunar Week and Liberalia Triday).

Windows software for encryption and decryption of single files or multiple files in a single operation for secure storage or secure transmission. It uses a 500-bit key for security, and has features designed to minimize the chances of user error.

Software for exploring five cellular automata: q-state Life (a generalization of Conway's Game of Life), the Belousov-Zhabotinsky Reaction, Togetherness, Viral Replication and Diffusion-Limited Aggregation. The documentation provides a complete description of the algorithms used.

This program is six tools in one. It creates a new HTML document template, automates most of the tasks involved in converting a text file (which may consist of program code) to a decent-looking HTML document, converts data in a text file to an HTML list or table, and creates the HTML code for tables, with the possibility of specifying cells larger than 1 row by 1 column and of entering text into the table cells.

For converting between BMP, GIF, JPG and PNG graphics files. Has two modes of operation: (i) A single file can be converted to all other formats (except GIF) in one operation, and JPGs can be output over a range of quality (compression) values. (ii) In batch mode any number of files in a folder can be converted from one format to another (except GIF). Converted files can be displayed automatically in the default browser.

Designed for easy performance of date calculations. Adds a number of days to a date, calculates the number of days between two dates and converts among Gregorian dates, Julian dates, Julian day numbers and ordinal dates of the form yyyy-ddd. Weekend days may be included or excluded. Supports batch computation using predefined operations in an input file. Program is bilingual: English and German.

Hermetic Stego is a a steganography program which 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 stego/encryption key, so that the presence of the hidden file is undetectable , even by forensic software using statistical methods and if a user-specified stego key is used then the hidden file can be extracted only by someone, using this software, who knows that stego key.

A program for secure file deletion and disk wipe which destroys (or purges, by overwriting) data in files on floppy, ZIP or hard disk so that the data cannot be recovered. A single file can be purged or, in batch mode, multiple files (in multiple folders) can be purged in one operation. Allows user-specifiable type of purge. Purge speed can be tested for accurate estimation of purge times.

This software scans a file, or text on the clipboard, and counts the number of occurrences of the different words. The text can be in a language other than English and can be a program code. The words which are found and displayed can be ordered alphabetically or by frequency. There is no limit on the size of an input file. The manner in which words are counted can be customized. Can be used with XML files. Results can be written to a file.

Easy Email Encryption is for sending and receiving encrypted email messages (optionally with attached files up to 100 KB), and is designed to be both secure and easy to use. It works with any email program including Outlook Express. It uses a symmetric key method, and keys are maintained in an encrypted list of keys for easy access. It is bilingual, English/German, and works with text in languages other than English.

This acts on an HTML document, counting occurrences of words and how they are used, and produces a keywords meta tag. It ignores common words such as 'this', and the resulting meta tag depends on user-specified weights assigned to boldface words, etc. It can be used with documents which use CSS and javascript, and it works with non-English text such as Spanish. The Advanced Version can act on multiple documents in a folder and its subfolders.

This software scans a text file, multiple files or text on the clipboard, and counts the number of occurrences of the different words. The text can be non-English. The words which are found and displayed can be ordered alphabetically or by frequency. There is no limit on the size of an input file. The manner in which words are counted can be customized. Can be used with XML files. Results can be written to a file.