HP ran some snappy advertisements before putting on a fire sale with $99 TouchPads (see the figure). The hardware was gone within a day and made a significant dent in HP’s bottom line.
HP built the software for the TouchPad using the webOS mobile operating system that replaced the Palm OS the company acquired. HP has used webOS internally and talked about licensing it to others, but it may be an uphill battle. The operating system is based on the 2.6.24 Linux kernel. It also has a Web browser based on the WebKit layout engine. It’s fast and flexible with a multitouch interface.
There are quite a few webOS developers, but the group is smaller compared to iOS, Android, and Windows developers.