Calabrio (News - Alert), a provider of contact center workforce optimization (WFO) software, has achieved third consecutive year of double-digit growth.

The company develops and markets easy to implement, use and maintain comprehensive suite of contact center workforce optimization software- Calabrio ONE.

Sales of Calabrio WFO products climbed more than 50 percent in 2011, and more than half of its deployments last year displaced an incumbent vendor’s system.

Calabrio notes that it has deployed its WFO and customer interaction products to more than 1 million agent desktops worldwide to date.

It now boasts more than 3,250 customers thanks to its continued advancement of the redesigned Calabrio ONE software suite and has gained several new customers in 2011 including Liberty University and Pella Corporation.

Calabrio also has new customers in a range of industries such as insurance, manufacturing, telecommunications, hospitality and financial services.

Calabrio integrated the applications into a single interface, and since then experienced a 30 percent increase in customers purchasing more than one application during an initial implementation.

“With yet another groundbreaking release, 2011 was a break-out year for Calabrio, and the pace of change in the industry promises even greater opportunities for Calabrio and our customers moving forward,” said Tom Goodmanson (News - Alert), president and CEO of Calabrio. “We aim to continue this momentum into 2012 as we expand Calabrio ONE’s capabilities to deliver the industry’s premier solution that combines modern software simplicity with real business results.”

Calabrio received many industry accolades last year including CRM Magazine’s 2011 Service Leaders award as a top vendor for customer satisfaction in the workforce optimization category.

In 2011, Calabrio was also chosen as the fastest growing companies in Minnesota by the Minneapolis/St. Paul Business Journal.

Calabrio was also highlighted in the Gartner (News - Alert) Magic Quadrant Report for Contact Center Workforce Optimization in 2011.

Calabrio was in news earlier this year for releasing version 8.8 of the Calabrio ONE suite.