A credible rival to MS Office, OpenOffice.org includes powerful applications for making text documents, spreadsheets, presentations, diagrams, and databases, as well as HTML and XML documents. Not only does it let you edit basic documents, such as letters and faxes, it also handles equations and complex and multipart documents with bibliographies, reference tables, and indexes.

The interface is similar to that of MS Office, and even advanced Office users will find almost everything they're used to: templates, collaborative features (versions, recording changes), macros, and even a programming language. OOo, as it's known, lets you open and save documents in formats as diverse as MS Office formats, PDF, HTML, and XML. It can also import files from those formats, as well as WordPerfect and others. However, it normally saves files in the open-standard Oasis OpenDocument XML format, for maximum compatibility with other applications.

OpenOffice.org 3 contains all the office software you need, in one single package. You don't have to worry which version to install: one installation program provides everything. The installation also includes features which some expensive rivals do not - for example, the ability to create .pdf files when you want to guarantee what the recipient sees on their computer.

For people used to other office software, OpenOffice.org 3 is a pleasant surprise. It's so straightforward! Studies have proved it is easier (and cheaper) to move to OpenOffice.org 3 from Microsoft Office than it is to upgrade to Microsoft's latest Office 2007. Because OpenOffice.org is one piece of software, everything works consistently between applications.