Amazon releases software kit for Kindle apps

January 21, 2010 1:56:07 PM PST is giving the Kindle electronic book reader more muscle. The company released a software kit that allows developers to build and sell their own applications for the Kindle.

Electronic Arts is building games that can be played on the device. Another company is developing a word games application. And restaurant reviewer Zagat is developing a city guide application.

The Kindle apps won't be available until later this year.