OpenOffice is an open-source office suite that includes alternatives to all Microsoft Office programs, like an spreadsheet, word processor, slide presentation program and other modules.

It lets you save your work as PDF, Office formats, and the native OpenOffice files.

Its very useful and has a complete feature set that makes it a great alternative to Microsoft Office. Supports opening Office files also.

Website Download

• OpenOffice.org 2.4.0
• OpenOffice.org 3.0.0
• AbiWord 2.6.4
• AbiWord 2.6.3
• Microsoft Office 2007 Service Pack 1