Documents To Go is an all-in-one application with support for Microsoft® Word, Excel & PowerPoint, PDF, Apple iWork and other files and attachments. It includes a desktop application (Win and Mac) to provide 2-way file synchronization and a version with support for Google Docs, Box.net, Dropbox, iDisk and SugarSync is also available.
Scribd is a Web 2.0 based document-sharing website which allows users to post documents of various formats, and embed them into a web page using its iPaper format.
eXpresso brings powerful, desktop editing to your browser so you can access your cloud-based files and coordinate collaboration among multiple people. Create and edit files online with Lotus Symphony or Microsoft Office.
Gliffy.com is a web-based diagram editor. Create and share flowcharts, network diagrams, floor plans, user interface designs and other drawings online.
iWork.com is a simple and smart way to share your iWork '09 documents, spreadsheets and presentations with anyone using a modern web browser, on a Mac or PC. It's easy to store, access, and organize your documents shared on iWork.com
Oracle Cloud Office is a Web and mobile office suite. It includes word
processing, spreadsheets, presentations, and more. Based on Web open
standards and the Open Document Format (ODF), Oracle Cloud Office
enables Web 2.0-style collaboration and mobile document access and
ensures compatibility with Microsoft Office file documents. Oracle Cloud
Office is integrated with Oracle Open Office, which enables rich
offline editing of complex presentation, text, and spreadsheet
documents.
LibreOffice is the power-packed free, libre and open source personal productivity suite for Windows, Macintosh and GNU/Linux, that gives you six feature-rich applications for all your document production and data processing needs: Writer, Calc, Impress, Draw, Math and Base. Support and documentation is free from our large, dedicated community of users, contributors and developers. The online and mobile version (for Android and iPad) are coming soon
The wikiCalc program lets you make web pages with more than just
paragraphs of prose. It combines the ease of authoring and multi-person
editing of a wiki with the familiar visual formatting and calculating
metaphor of a spreadsheet. Written in Perl and released under the GPL
2.0 license, it can easily be setup to run on almost any server as a
web application or on a personal computer to publish by FTP.
EtherPad is a web-based collaborative real-time editor, allowing authors to simultaneously edit a text document, and see all of the participants' edits in real-time, with the ability to display each author's text in their own color. There is also a chat box in the sidebar to allow meta communication. Etherpad was acquired by Google and released as open source later that month. Further development is coordinated by the EtherPad Foundation.