A Microsoft blog reiterated this week that thewon't be tied to either Windows or Internet Explorer.
The blogger, Microsoft's Sarah Perez, also noted that Microsoft won't be mandating use of Silverlight, its rival to Adobe's Flash.
"Silverlight is not required," Perez said in the Q-and-A posting. "Using Silverlight will enhance the user experience, resulting in sharper images and improved rendering. Also, the Office Live Workspace has integrated Silverlight technology into the multi-file upload function for a better experience."
Microsoft has said a technical preview of the Web-based Office apps will come later this year. Microsoft hasn't explicitly said there will be a free version, though executives have said the apps will be part of Office Live, which comes in both free and subscription flavors. Perez takes that to mean--as do I--that there will be both free and paid options.
On the corporate side, Microsoft has said the Office Web Applications will be tied to SharePoint.