Google Docs & Spreadsheets is a web-based editor that allows you to create text documents and spreadsheets. You can easily do all the basics, including making bulleted lists, sorting by columns, adding tables, images, comments, formulas, changing fonts and more. Google Docs & Spreadsheets allows you to upload your files and make changes to them online. It accepts most popular file formats. It is possible to invite people and work on files collaboratively; additionally, you can publish your documents and spreadsheets online with one click, as normal-looking web pages. Free to use.
Tools for online file/docs storage and collaboration. Contains Web versions of Microsoft office editors (Word, Excel, PowerPoint, OneNote). Excel web version allows simultaneous document editing in real time.
Store your files centrally. Access from anywhere. Maintain multiple versions of your files. The interface is very intuitive and you can import any existing document to work on it. Zoho Writer also enables you to export you text in several formats, such as PDF, ODT, Word, HTML and others. Zoho Sheet - Online alternative to traditional spreadsheet applications with powerful features like charting, collaboration & more.. Free to use.
EditGrid is a service that allows you to edit, store and access your spreadsheets from any computer with a browser. You can import from and export to common formats, including MS Excel, CSV, Gnumeric and OpenOffice's Calc. EditGrid supports Microsoft Internet Explorer, Mozilla FireFox (Safari coming soon). Free to use.
EtherPad is the only web-based word processor that allows people to work together in really real-time. When multiple people edit the same document simultaneously, any changes are instantly reflected on everyone's screen. The result is a new and productive way to collaborate on text documents, useful for meeting notes, drafting sessions, education, team programming, and more.
ThinkFree Docs is a document sharing space where you can find, view and share documents. You can also browse documents by 'ranking', 'document type', and 'language'.
Office Web Apps are the online, lightweight versions of Word, Excel,
PowerPoint and OneNote. With Office Web Apps people can access, share
and work on Office documents from virtually anywhere with an Internet
connection — making it easy to bring ideas to life at home, school or
work.
ajaxWrite has been designed to look like Microsoft Word, making it easy for anyone to start using it without needing to learn a new program. ajaxWrite also handles all the popular document formats so it's easy to share your files and collaborate with your co-workers and friends. Once finished with your document, you can easily save your work right to your hard drive. The ajaxXLS viewer and editor allow you to create and edit Microsoft Excel and OpenOffice spreadsheets.