Narrow your search
Chart your mental, emotional, and physical cycles.
Protoscience or pseudoscience? You be the judge. Originally formulated in the late 19th century, many biorhythm theories propose that a set of...
Biorhythms is a powerful, easy-to-use application ideal for making personal forecasts. Knowing your biorhythms, you can be sure about what to...
Chart your biorhythms with a scrolling graph.
Get forecasts on how to succeed at different tasks using western scientific theory of biorhythms.
Calculate and analyze information for biorhythms in the past, present, and future.
Play original classic computer games from the 70's and early 80's.
Generate, calculate, and analyze text and graphical biorhythms.
Find your own biorhythms and the biorhythm compatibility.
Compute your days of tiredness using Kotelnic's method.
We've scoured most of Mozilla's catalog to find Firefox extensions that simply should not exist. Click through to see our gallery of misses.