The Off Broadway Alliance is a non-profit corporation organized by theater professionals dedicated to supporting, promoting and encouraging the production of Off Broadway theater and to making live theater increasingly accessible to new and diverse audiences. The Alliance holds monthly meetings and membership is open to everyone in the Off Broadway theater community.
The Alliance created and administers 20 at 20, the biannual event where you can purchase $20 tickets to participating Off Broadway shows 20 minutes prior to curtain. It sponsors a Seminar Series focusing on the culture, business and history of Off Broadway featuring major players from the Off Broadway scene. The organization also administers the "This Day in Off Broadway History" online calendar. In June 2009 The Alliance released the first ever Off Broadway Economic Impact Report, which detailed Off Broadway's $461 million impact on the City of New York during the 2008 theater season.