It's hard to believe now, but the HP TouchPad was one of the most eagerly awaited tablets back in July of 2011, promising to breathe new life into webOS' multitasking-friendly interface. Some of the software elements were indeed slick, such as Stacks for organizing related tasks and the polished notification system. Ultimately, though, sluggish and buggy performance and a dearth of apps doomed this slate. After less than 3 months on sale, HP pulled the plug on the TouchPad and all webOS hardware. So much for “doubling down” on the platform it purchased from Palm.