Long popular with bloggers, the open-source WordPress blogging software is also starting to find a niche as a low-cost corporate CMS (content management system), at least for managing relatively simple Web sites.

"In the last six months or so, over half the sites being launched with WordPress are really not blogging sites per se, they are complete sites," said Raanan Bar-Cohen, vice president of media services for Automattic , the company WordPress developer Matt Mullenweg started to offer a hosted version of the software.

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