Our Company

Grog LLC is a United States website design company based in Austin, Texas.


Animated Knots by Grog is our major website and attracts around 15,000 visitors each day. More than 190 detailed animations show how to tie knots for many diverse purposes. A search for "knots" consistently ranks us number one.
An Acid-Base Tutorial for medical professionals.
Animated Napkins by Grog – napkin folds for all occasions.
Night Navigation Lights (finally on its own website) – recognizing the lights on a vessel moving at night.

Programs and Apps

We distribute a Download Version of Animated Knots for your computer (US $4.95) as well as Apps for the iPhone and iPad and Android Phones.

Software Available Here

An Extensive Unicode Table converting codes into characters.
Interactive Animated 4x4 Pan magic Square.
InteractiveAnimated 5x5 Pan magic Square.


The three Partners in Grog LLC are Alan Grogono, David Grogono, and Martin Grogono.

We may all be contacted via our Contact Page on the Animated Knots Website.