Do you like roller skating?20Cones is an Android application to learn and improve your roller skating skill. It help you to learn the tricks of slalom …
"20 Hops" is a puzzle of visiting 20 tiles exactly once, moving like a Chess Knight. This is a game of sheer brain power, requiring no knowledge, expe …
The American Wood Council (AWC) Span Calculator for Wood Joists and Rafters (Span Calc) performs calculations for all species and grades of commercial …