LibreOffice - Writer - Open-source cross-platform word processor.
Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.
Microsoft Word - Microsoft Word is a commercial word document processor for Windows.
SoftMaker Office - SoftMaker Office is one of the most powerful and reliable office suite that is fully compatible with the MS Office Suite.
Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.
SSuite Office - SSuite Office is called to be one of the most accomplished software developers for both beginners and professionals alike.