America Online (AOL) has bought privately held Wildseed, which produces Linux-based software accessories for mobile devices.
Wildseed is best known for its consumer-focused interactive SmartSkin software, which delivers music, ring tones, video clips, pictures, games and screen themes to phones.
AOL said it has created a new business division - AOL Wireless - to boost its mobile services, and Wildseed would become part of this.
AOL Wireless will also house Tegic Communications, which AOL bought in 1999. The business specialises in simplifying text entry into mobile devices.
AOL Wireless will also include AOL Mobile, a division that includes several AOL services for mobile devices, such as instant messaging, e-mail, photo storage, radio, search and mapping.