Google announced late Monday it will acquire Urchin Software, a developer of analytic solutions for Web sites. Urchin produces tools to track the performance of marketing, examine the user experience and optimize content. Google intends to offer the tools to Web site owners and marketers as an enticement to use its services.

"This technology will be a valuable addition to Google's suite of advertising and publishing products," said Jonathan Rosenberg, vice president of product management at Google. Google expects that the acquisition will close before the end of April. The terms of the sale were not disclosed.