"First there was Psion. The Series 3 (and then Series 5) range of palmtops had Word and Sheet built-in, terrifically powerful, desktop-class office applications. With the passing of the Psion era, Nokia, which had inherited the EPOC/Symbian platform, took the raw Word and Sheet code and adapted it for their Communicator line. Most (but not all) of the functionality was still there, but there was a feeling that a degree of simplification had taken place. By the time of the launch of the 9500, even spell check functions had been removed. And, to add to the problems, the old Word/Sheet codebase handled only Office 97 files and even these somewhat clumsily, since this had been added in since the heyday of Psion.In parallel to this, Quickoffice had become a major player in the Palm OS scene, offering an alternative to Documents To Go and suffering somewhat from Palm's deal to have a version of DTG in most handhelds. Not surprisingly, Quickoffice diversified to other platforms, first to Symbian/UIQ and then to S60. Nokia must have liked the basic Quickoffice 3 viewers, as they quickly licensed them and these have appeared in almost all S60 handsets produced in the last two years. Users could then upgrade the viewers to the full editing suite if they wished." Read more here: