Cantennator calculates dimentions for a can WiFi antenna. You enter the can diameter, and it will calculate where to drill the hole for the connector as well as the optimum can length. Boost your WiFi signal with this cheap and easy to make antenna.
Price: $0, Rating: 6, Downloads: 22
With MaritimeQuizz, learning maritime flags and morse code is easy and fun. You learn first by clicking on flags, hearing the morse code and corresponding messages. Later you can let the program quiz you on flags, morse and international messages.
Price: $14.95, Rating: 10, Downloads: 26