Open Office
Open Office is a suite of open source software containing word processing, spread sheet, presentation, graphics and database applications. It works with most operating systems and supports of 120 languages. It can also handle other file formats including those from Microsoft Office.
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Prezi is an online presentation tool which works very differently from Microsoft Powerpoint (or any program that shows slides). In Prezi, your content is arranged over a broad canvas that you can zoom in and out of, either by clicking on key points with the mouse, or by programming the order in which each element is focussed on.
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Google Drive is a free cloud storage application, similar to Dropbox or Microsoft OneDrive. The basic principle behind having your files stored in "the cloud" is that you can easily back up documents, photos and other files just by saving them to a specific folder on your computer - your Google Drive folder.
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