TapRoot Systems, a startup focused on software fur use in smartphones, has a new investor and $6.5 million in B round financing.

Harbert Venture Partners led the new round of financing for TapRoot. Also participating were TapRoot’s original backers Intersouth Partners and Mid-Atlantic Venture Funds.

TapRoot closed on $7 million in A-round financing in April of last year.

As part of the deal, Harbert Ventures’ Wayne Hunter joins TapRoot’s board of directors.

“TapRoot has established itself as one of the pioneers in the smartphone industry and is recognized as a leading innovator in this fast-growing market,” Hunter, managing partner with Harbert Venture Partners, said in a statement. “In addition, the company is led by a terrific management team with the experience and passion for the business. We have high hopes for TapRoot’s future.”

TapRoot’s software enables smartphones to work over both cellular and wireless local area networks. TapRoot utilizes the Symbian operating system for data-enabled phones as well as other software.

“Having already grown to become the largest independent provider of Symbian OS based software products and services in North America, we are planning to expand our development and support organizations in both Asia and Europe to better serve our growing customer base,” said Hugh Thomas, TapRoot’s CEO. “Our investors have given us a great vote of confidence. We now have the resources to pursue our vision and provide our industry-leading technology to more customers,” he continued.

TapRoot was launched in 2000.

TapRoot: www.taprootsystems.com