Free software for office

Nowadays, there are many free softwares but they are very good. Today I can introduce you some softwares for office using:
1. OpenOffice: the product is a multi-platform office productivity suite. It includes the key desktop applications, such as a word processor, spreadsheet, presentation manager, and drawing program, with a user interface and feature set similar to other office suites. Sophisticated and flexible, OpenOffice.org also works transparently with a variety of file formats, including those of Microsoft Office, and the vendor-neutral OpenDocument standard from OASIS (www.openoffice.org)
2. PDFCreator is a free tool to create PDF files from nearly any Windows application.

Key Features:

• Create PDFs from any program that is able to print
• Security: Encrypt PDFs and protect them from being opened, printed etc.
• Send generated files via eMail
• Create more than just PDFs: PNG, JPG, TIFF, BMP, PCX, PS, EPS
• AutoSave files to folders and filenames based on Tags like Username, Computername, Date, Time etc.
• Merge multiple files into one PDF
• Easy Install: Just say what you want and everything is installed
• Terminal Server: PDFCreator also runs on Terminal Servers without problems
• And the best: PDFCreator is free, even for commercial use! It is Open Source and released under the Terms of the GNU General Public License. (http://www.pdfforge.org)