Openoffice is a open source and free software pack that its functions and features is very similar to Microsoft Office Home. It has the software for typeing like Microsoft Word, has the software for doing powerpoints, has the software to do the calculation and graphing like Microsoft Excel, etc. Personally, I been using Openoffice to do all my class works for two years and I am very satisfied with it. Openoffice is great for all students to use no matter High School students or College Students since it is a free software; they do not have to pay for about $80 dollars to pay for the Microsoft Office pack and the only softwares they oftenly use are Microsoft Words and Excel (power point sometime). Moreover, since Openoffice is open source, it has many add-on extensions you can download to expand your using experience like Firefox does.
OpenOffice.org is both an open-source product and a project. The product is a multiplatform office productivity suite. It includes desktop applications such as a word processor, a spreadsheet program, a presentation manager, and a drawing program, with a user interface and feature set similar to those of other office suites. OpenOffice.org also works transparently with a variety of file formats, including those of Microsoft Office. Localizations of OpenOffice.org are available in 27 languages, with more being constantly added by the community. OpenOffice.org runs on Solaris, Linux (including PPC Linux), and Windows. Written in C++ and with documented APIs licensed under the LGPL and SISSL open-source protocols, OpenOffice.org allows any knowledgeable developer to benefit from the source.
Version 3 includes support for Office 2007 files, improvement to the Commenting/Notes feature, multi-page views, spreadsheet collaboration, and other bug-fixes and updates.
Openoffice Power Point
Openoffice style Excel