Word processor

Google Docs is a free web based word processor. Google Docs allows you to collaborate simultaneously on the same document.

EtherPad lets people collaborate on text in real-time. You can start immediately without signing up.

ThinkFree Office is a Web-based, server hosted word processor. Thinkfree Office Online is a free service.

Zoho Writor is a web based word processor to create, edit and share documents online.

TextFlow offers parallel word processing to produce text faster and use feedback better.

Writeboard is a collaborative web-based text editor developed by 37signals.