This website presents software which has been hand‑crafted by the developer for functionality and usefulness or intrinsic interest. These programs run with all versions of Windows (including Win10), and on Macs with an emulator. They are all free to download (as trial versions). Click on a program title (e.g., Equinoxes, Solstices and Cross‑Quarter Days) for information about pricing, what it is for, how to use it, etc. Or click on a thumbnail image for full‑size (then click the back arrow in your browser to return to this page).
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Equinoxes, Solstices and Cross‑Quarter Days
Eclipses, Moon Phases and Seasons
Celtic Festivals and Cross Quarter Dates
Julian‑Gregorian‑Dee Date Calculator
Easy Date Converter
Lunar Calendars and Eclipse Finder
File Backup Lite
C Code to HTML Converter
Five Cellular Automata
You can pay by using credit/debit card or amazon pay. Or you can pay via Western Union, MoneyGram or RIA and get a 35% discount. Or you can pay via Bitcoin or Bitcoin Cash and get a 20% discount.
In case you were wondering, the "ch" in "hermetic.ch" is short for "Confederation Helvetica", that is, "Switzerland".