Written in PHP, Open-RealtyŽ is free web based listing management application. With a large open-source community working with Open-RealtyŽ, it is designed to be fast, flexible, easy to set up and use.

With solid management from Transparent Technologies, Open-RealtyŽ is released free of charge, to help support the continuing development. Transparent Technologies is owned by Ryan Bonham, the lead developer for Open-RealtyŽ.