Ben Klang leads the Adhearsion project, an open source voice application development framework written in Ruby. Adhearsion makes it fast and easy to build voice applications and integrates with telephony systems like Asterisk. It can run on Asterisk or in the cloud on Tropo. Adhearsion has over 15,000 lines of code, has been downloaded over 14,000 times since 2009, and has a worldwide community of developers contributing to its continued growth and features.