RESO defines how real estate data is exchanged between MLSs, brokerages and technology providers and has created a set of open-source tools to help developers build, test and certify RESO-compliant servers and applications so listing data can flow reliably across the industry.
The RESO Tools site contains open-source testing, client SDK (with supporting libraries, including Add/Edit and EntityEvent support) and reference implementation resources for the RESO Web API specification.
Explore the Desktop Client (an application that is installed on your computer and runs locally), Web Client (a version that runs in your browser and offers the same core tools), Reference Server and other utilities.
If you want to see a demo of RESO Tools in action, you can view a webinar about them that was conducted by RESO CTO Joshua Darnell. | WATCH WEBINAR






