Google officials don’t like the suggestion that their own employees depend mostly on Microsoft Office even as Google Apps makes headway into the enterprise collaboration and e-mail market.

An August report by the Burton Group called Google Apps “weak compared to best-of-breed point solutions” and said customers can view it as “a collaboration add-on to Microsoft Office, which is how Google uses it internally.”

A Google blogger subsequently posted statistics showing that the vast majority of Google employees regularly use Docs & Spreadsheets, one of the programs in Google’s hosted collaboration suite. Separately, a Google spokesman tells Network World that some employees use Google Apps as their only collaboration suite.

“Employees get to choose the tools they want to do the job,” spokesman Emmanuel Evita says in an e-mail. “Some Google employees use only Google Apps, some use traditional desktop applications, many use a combination of the two. To say Google Apps is [used] ‘only as a collaboration add-on’ is inaccurate for those who choose it as a primary or preferred means of communication and collaboration.”

Google Docs & Spreadsheets product manager Ken Norton, in a blog posting on Aug. 28, writes, “Since we use all of the Google Apps every day, we experience first hand what works and what doesn’t, and we can apply that knowledge to making the products better.”

Norton then offers statistics: “87% of Google employees worldwide used Docs & Spreadsheets in the past week and 96% have used it in the past month. Googlers have created and shared more than 370,000 documents and spreadsheets and they create more than 3,000 new ones each day. In fact, I wrote this blog post and shared it with colleagues using Docs & Spreadsheets just a few moments ago.”

Norton didn’t say how often Google employees use Microsoft Office.

Microsoft, though it still dominates the e-mail and workplace collaboration market with Office, is paying close attention to Google Apps.

Microsoft developers have been spurred to make their own product more user-friendly as Google trumpets the simple, easy-to-use Apps.

The Burton Group isn’t that impressed with Google Apps, though, having published a report titled “Google Apps in the Enterprise: A Promotion-Enhancing or Career-Limiting Move for Enterprise Architects?”