ezRETS ODBC Driver
    ezRETS is a cross-platform ODBC driver that connects to RETS servers. It allows you to treat a RETS server like you would any other database, including the use of SQL as the query language.

    For more information, visit the project page.
simpleRETS, the simple command line RETS client.
    SimpleRETS is a simple command line RETS client that downloads data in CSV format.

    For more information, visit the project page.
libRETS
    libRETS is RETS library written in C++. It is a cross-platform library that allows you to embed a RETS client into any application that can link against C/C++. Language bindings exist for the .NET languages (VB and C#), Ruby and Python.

    For more information, visit the project page.
Variman RETS Server
    Variman is an Open Source RETS server, and a continuation of the CRT Reference Implementation. Variman is a ground-up re-write to make code maintenance and deployment easier.

    Variman is certified compliant with RETS versions 1.0, 1.5, 1.7 and 1.7.2. It is cross platform and runs on Windows, Linux, Mac OS X. PostgreSQL is supported with Microsoft SQLServer support coming soon.

    For more information, visit the project page.
Java RETS Client
    Originally developed for Cart, the Java RETS client is a Java library that allows you to embed a RETS client into any Java application.

    For more information, visit the project page.
VieleRETS
    The simplest of all RETS clients. Provides listing information for your website and is an example of a "Persistent download". Very useful if you run the Open-Realty package.

    Visit the VieleRETS page.

Retriever
    The simplest of all RETS clients. Provides a page view of a listing and is an example of a "transient download". Very useful if you do not want to make a copy of data on your hard drive.

    Visit the Retriever page.

Cart: CRT's RETS Client
    Cart is the Center for Realtor Technology's new graphical desktop RETS client.

    Cart is certified compliant with RETS versions 1.0 and 1.5. It is cross platform and runs on Windows and Linux, with a Mac OS X version coming soon.

    Cart is easily downloaded and run from any web browser with a single click from the homepage, using the Java Web Start technology.

    For more information, visit the project page.
DMT Utility
    A DMQL-to-SQL parser and translater

    Visit the DMT Utility page.

DSNC
    A Utility that reads XML DTD specifications and generates SQL Data Definition Language (DDL)

    Visit the DSNC project page.

Open RETS Client (ORC)
    The Open RETS Client (ORC) is a command-line application written in Java, designed to retrieve Multiple Listing Service (MLS) related data from a remote Real Estate Transaction Standard (RETS) compatible server.

    Visit the ORC project page.