Microsoft's new Office 2010 productivity suite has gone on sale today.
The full Home and Student edition costs £109.99 from Microsoft's UK store, and includes Word, Excel, PowerPoint and OneNote. It can be installed on up to three computers.
The £239.99 Home and Business Edition includes all core programs and adds Outlook 2010 e-mail.
The £429.99 Professional version for businesses adds desktop publishing program Publisher 2010 and Microsoft's Access 2010 database.
Microsoft is also launching a free web-based version of the core Office programs that can be installed using a Hotmail account or Windows Live from the company's online SkyDrive storage service.
Microsoft's vice president for Office product management, Takeshi Numoto, will be available for a live chat with customers today at Microsoft's Pri0 blog.
The web version of Office will provide direct competition to Google's arsenal of web-based apps, targeted towards enterprise users of Google Docs.