Citrix has reported revenues of $491m in the first quarter ended 31 March 2011, an increase of 18% as compared to $414.3m in the same period last year.

The company posted an operating income of $81m, compared to $52.1m in the same period last year.

For the quarter ended 31 March 2011, the net income attributable to the company was $73.5m, compared to $47.3m in the same period a year ago. Diluted earnings per share increased to $0.38 from $0.25.

Geographically, revenue increased in the America’s region by 22%; EMEA region by 12% and the Pacific region by 25%.

Cash flow from operations was $159m, compared to $144m in the first quarter of 2010.

Citrix president and CEO Mark Templeton said customer demand was solid across their core SaaS, desktop and networking markets, especially in the Americas and Pacific, supported by large, strategic technical services engagements.

"Clearly, the industry is rapidly moving from ‘PC era’ to ‘cloud era,’ where users are demanding and CIOs are embracing the consumerisation of IT," Templeton said.

"We’re driving the transition with products that change how people collaborate, how desktops are delivered, and how delivery networks are built."

For second quarter of 2011, the company expects net revenues to be in the range of $515m and $525m.