* Ztango, a McLean developer of software for cell phones, was purchased by a Korean firm that sells similar wireless Internet software internationally. The companies declined to disclose terms of the deal. Through the acquisition of Ztango, WiderThan plans to expand operations in the United States. Ztango's software is used by Verizon Wireless, Cingular Wireless and AT&T Wireless to deliver multimedia and messaging services to mobile phones. Ztango, which employs 65 people, will continue to have headquarters in McLean and will operate as a division of WiderThan.

* Online Resources, a McLean Internet banking and bill payment company, said it earned $2.2 million (11 cents a share) in the third quarter ended Sept. 30, compared with a profit of $364,000 (2 cents) in the same period a year earlier. Revenue rose to $11 million, from $9.3 million in the year-ago quarter. Shares of Online Resources, which reported after the market's close, closed yesterday at $7.24, up 3 cents.

* Northrop Grumman Information Technology of Herndon won a three-year contract worth up to $49.8 million from the Air Force to provide upgrades for the system that provides all unclassified maintenance information for Air Force weapon systems. Northrop Grumman's work will include hardware operation, help desk support, database administration, system testing and software development. Work on the contract will be done at the company's Beavercreek, Ohio, location.

* Technology Council of Maryland named Julie Coons president, effective Monday. Coons most recently served as executive vice president of PCIA -- the Wireless Infrastructure Association. Technology Council of Maryland is a nonprofit membership consortium for high-technology firms, government laboratories, higher education institutions and business support firms in the state.

* Intelsat announced that its shareholders approved its deal to be acquired by Bermuda-based Zeus Holdings, which represents a group of private investors. In August, the commercial satellite operator said Zeus would purchase the company for $3 billion in cash, or $18.75 per share, plus the assumption of nearly $2 billion in debt. Zeus Holdings represents Apax Partners, Apollo Management, Madison Dearborn Partners and Permira Advisers.

Compiled from reports by Washington Post staff writers.