ZOHO Writer is a word processing application in the cloud. There is no software to install, and documents are all saved in the cloud making it easy for students to work on projects from home, the classroom or the lab without the need to transfer files with a USB Drive or disk. Of the online Word Processors on the internet ZOHO Writer seems to be the most feature rich. In addition to everything you would expect in a word processing application. It has great collaboration tools that are perfect for group projects. It also has a great equation editor for High school Math and science Projects.
ZOHO Writer tightly integrates with Microsoft Office. It has a plug-in available for Office that allows you to open, edit and save ZOHO docs. With tight integration, robust features, and and a great price (free) ZOHO Office is the best online word processor I have found yet.