Google Inc. would begin selling business America an online suite of software, which has e-mail, word processing, spreadsheets and more calendar management, rising the Internet search leader's attack on technical turf usually conquered by Microsoft and IBM.

The expansion, planned to be exposed today, threatens to bog down Microsoft Corp.'s efforts to influence businesses to purchase the newest version of its market-leading Office suite, which was developed along with its new Vista operating system, The Associated Press reported.