Google Docs & Spreadsheets

The last one from Google:
"Google Docs & Spreadsheets is a web-based word-processing and spreadsheet product that makes it easier for people to create, manage, and share documents and spreadsheets online. Google Docs & Spreadsheets integrates Writely and Google Spreadsheets into a single, easy-to-use product that takes an innovative approach to a very specific problem in the productivity-software space: enabling people to manage and collaborate on the documents and spreadsheets they rely on in their personal and professional lives, no matter where they are or when they need to access them."