Google has increased competition with Microsoft Office in the cloud by updating Google Docs.
Google Docs now supports up to 50 people working at the same time and document editing by others in a virtual team is visible in real time.
Google said many of the new document and spreadsheet features are in response to user requests.
These include a margin ruler, better numbering and bullets and easier image placement options in documents and a formula editing bar, cell auto-complete and drag-and-drop columns in spreadsheets.
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Google also claims big improvements to the document upload feature to make moving files to the cloud easier, including better retention of original structure and format.
The update to Google Docs comes ahead of the launch the latest version of Microsoft's Office software suite next month.
The update to Google Docs is an attempt by Google to close the gap with Microsoft by matching the features and stability of its Office software.
Google Docs is free for consumers and runs $50 per business user per year, while Office 2010 will range from $99 to $499 at retail and make up nearly 25% of Microsoft's revenue, according to US reports.
Microsoft plans to release Office 2010 to businesses in May and consumers in June.
The new version of Office will also include improved collaboration capabilities such as social-networking features in SharePoint and broader support of cloud computing across devices.