This is one of the best products for people who like using Wifi in areas with weak signals or moving around. This is a range-extending wifi product which connects through the USB with the software you can connect to any Wifi connection within a 1000 feet which is a huge area. Whats great is that you can focus the antenna in the direction that you want so it can concentrate on the antenna if you know where the antenna is. It can sit on a flat area or clip on to your screan.

It works with Windows XP and Vista and on Mac OS X 10.3 and up, including Leopard which costs $79.00.

Link: hField