SAN FRANCISCO, Aug. 27 — Further extending its efforts beyond search technology, Google plans to announce Monday that it will offer software providing a range of online services for business users.

The company, which has gradually been adding to its arsenal of services, says it will offer a package of software including its e-mail, calendar and chat programs and a Web site development tool for companies and organizations looking to avoid the high cost of providing such services on their own.

Dave Girouard, vice president and general manager of Google’s enterprise business, called the move a “starting point” for Google in catering to business users.

Initially, the package will be free, but later this year Google plans to begin selling a version that includes additional features as well as technical support.