LivePerson Inc., which sells live chat and other customer service tools to e-retailers, said this week it will buy Australia-based Engage Pty Ltd., which provides customer contact technology. LivePerson this week also said its revenue had increased nearly 16% year over year in the third quarter.

LivePerson did not say how much it will pay for Engage. The deal will close in the fourth quarter, LivePerson says. Engage’s hosted software enables businesses to reach consumers via social media, live chat, text messages and other methods.

“Our acquisition of Engage will enhance our ability to offer intelligent engagement solutions to businesses in the Asia-Pacific region,” says Robert LoCascio, CEO and founder of LivePerson, which is headquartered in New York City. “Engage has been a reseller and champion of LivePerson solutions for several years, in addition to having its own successful hosted contact center solutions, which complement LivePerson’s offerings.”

LivePerson also reported that for the third quarter ended Sept. 30, revenues reached nearly $39.7 million, up 15.7% from $34.3 million for the same period last year. Revenue from b2b operations increased by 17%, to approximately $36.1 million, while revenue from consumer operations remained flat at about $3.6 million.

Operating expenses increased by 27.0%, to approximately $37.1 million in Q3 from $29.2 million last year. Net income in the third quarter stood at $1.6 million, down from $2.7 million for the same period in 2011.

“During the quarter we saw continued strength in many of our key business and financial metrics, all indicators that point to the overall health of the business,” LoCascio says. “We signed a record number of deals and bookings topped $8 million.  We also continued to strengthen our core product offerings, making substantial progress with the integration of our advanced predictive targeting capabilities, rolling out a fortified turnkey mobile solution and advancing with our overall platform strategy.”

For the nine months ended Sept. 30, revenue was $114.9 million, up 18.9% from nearly $96.6 million for the same period last year. Net income stood at approximately $4.9 million compared with $8.2 million in 2011.