Amazon.com has launched a free Kindle app for webOS to use with the new HP TouchPad.
The app allows customers to "buy once, read everywhere" across other devices such as Kindle, iPad, iPod touch, Blackberry and iPhone.
Dorothy Nicholls, director of Amazon Kindle, said: "We're very excited to add webOS to this list.
"As with our other Kindle apps, the webOS app will be free and will incorporate our Whispersync technology so you can seamlessly switch between devices and platforms and never be without reading."
The HP TouchPad is one of the first Kindle applications to support new Kindle features like Collections.