The Palm OS was left stagnate and eventually replaced by WebOS, which the Palm's latest OS powering the Pre and Pixi. The OS itself is designed such that most programmers/developers can easily create new applications for it, given that most already know HTML, CSS, and JavaScript. However, thus far there have only been two devices running the OS, both of which have been locked to Sprint, a company that has fund it difficult to compete with AT&T and Verizon in recent years. Palm is broadening its horizons and looks like it may become profitable again in the future, but it has a large hill to climb. Two years ago, they were on the brink of collapse, with investors leaving right and left. Today, at least there's hope.


P.S. No other mobile OS can run legacy Palm OS applications.