Alternatives to office

1) Microsoft Works
http://www.microsoft.com/products/works/ProductDetails.aspx?pid=003
You can use microsoft works to create letters, resumes, greeting cards and more, with customizable templates, improved proofing tools and a built-in dictionary.
Keep to-do’s organized, plan home improvements, or track your personal budget with the Works Spreadsheet.
Combine up to 32 different calendars into one view to keep track of everyone’s plans with the Works Calendar.
Store addresses, lists, or home inventories in the Works Database.

2) Linux
http://www.linux.org/
Linux is an operating system
that was initially created as a hobby by a young student, Linus Torvalds, at the University of Helsinki in Finland. Linus had an interest in Minix, a small UNIX system, and decided to develop a system that exceeded the Minix standards. Linux hasCAE Databases a financial office project setup wizard, project managment spreadsheets and a word processor.

3) corel wordperfect
http://www.corel.com/servlet/Satellite/us/en/Content/1150905725000
Corel is one of the world’s top software companies with more than 100 million active users in over 75 countries. This programming includes CorelDRAW® Graphics Suite, Corel® Paint Shop Pro® Photo, Corel® Painter™, VideoStudio®, WinDVD®, Corel® WordPerfect® Office and WinZip®.

4) Open Office
http://why.openoffice.org/
open office is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on all common computers. It stores all your data in an international open standard format and can also read and write files from other common office software packages. It can be downloaded and used completely free of charge for any purpose.

5) Kingsoft Office
http://www.binarynow.com/office-suite/kingsoft-office-2009-an-alternative-to-microsoft-office-with-native-pdf-export/
Kingsoft office includes three alternative Microsoft Office compatible applications: a word processor (Microsoft Word), spreadsheet editor (Microsoft Excel) and presentation creation utility (Microsoft PowerPoint). Kingsoft Office includes native PDF export support and does not require any third-party add-ons to create PDF output from any of the three applications. PDF bookmarks, table of contents (TOC) and permissions (encryption) are supported.