Offerings from start-ups such as AdventNet's Zoho and ThinkFree Online go further than Google does in offering a rich array of free, Web-based business applications.

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However, we found ourselves most impressed by the customized versions of ThinkFree Office Mobile, which enable dual-screen viewing and editing of Word, PowerPoint, and Excel documents, plus PDF viewing to boot.

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An optimized, intuitive touch screen interface allows an accessible and intelligent experience, while users are able to work on the go thanks to ThinkFree mobile office, enabling a variety of Office documents (Word, PPT, Excel and PDF) to be edited from the handset.

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