Best office suite: LibreOffice

Creating documents might seem like the sort of thing you'd only trust to a paid package like Microsoft Office. But LibreOffice – the forked, superior successor to OpenOffice – lacks little compared to its venerable competitor.
It's fully compatible with opening and saving files in all of Microsoft's standard formats as well as the widely supported Open Document Format, and you'll find all of the formatting and formula tools you'd expect in a high-end office package.
With a word processor (Writer), a spreadsheet (Calc), Powerpoint-style presentation software (Impress), a database (Base) and more, this package is ready for just about anything. LibreOffice is, admittedly, not highly polished – we've learned to cope with the occasional crash – but it's by far the best free office suite around.