Trusted data across borders
GDX empowers organizations to share certified real estate data across borders to expand trusted property discovery and exchange opportunities for the marketplaces and communities they serve.
Federated global data exchange
Mission, vision and the 30-30-30 target
GDX is a federated, standards-based network. It is not a consumer portal or a central listing database. Every participating node retains authority over its data, permissions, attribution and market rules.
A globally connected marketplace
A globally connected real estate marketplace where data, commerce and collaboration move rapidly across borders.
30-30-30
GDX's primary strategic target is to have organizations in 30 countries provide data feeds with 30 standardized fields within the first 30 months of operations.
IMLSF connects the global community and develops relationships. GDX puts standards-based global data exchange into operation.
Global Data Exchange
Trusted listing data, connected across borders.
GDX is a standards-based, platform-agnostic network that enables MLSs, broker repositories and real estate organizations to share public listing data across borders using the RESO Web API.
What GDX is
Built for collaboration, not replacement.
- Not an MLS
- Not a consumer listing portal
- Not an exchange for private or non-public data
GDX gives qualified organizations a common way to exchange public listing data while each market remains the source of truth for its own data, policies and attribution.
Standards first
RESO Web API and Data Dictionary standards reduce one-off integrations and make data easier to understand across systems.
Local control
Each participating market retains its own rules, licensing requirements, attribution and authority over its data.
Public data scope
The exchange is designed around authorized public listing data and defined display and takedown requirements.
Where GDX is represented
A growing public network
The current public GDX roster spans distinct markets across North America, Europe, the Middle East and West Africa. Participation can be at different implementation stages; the map shows the network as it evolves.
CA
Canada
- TRREB (Toronto)
- ITSO (Kitchener-Waterloo)
US
United States
- Stellar MLS (Orlando)
- San Diego MLS (San Diego)
- OneKey MLS (New York)
- FMLS (Atlanta)
- Builders Update (Austin)
IE
Ireland
- 4Property (Dublin)
MD
Moldova
- APAIM (Chisinau)
RO
Romania
- MLS Leader (Bucharest)
IT
Italy
- Listing+ (Rome)
AE
United Arab Emirates
- ADRES (Abu Dhabi)
GH
Ghana
- Xchange (Accra)
GR
Greece
- EPPA (Thessaloniki)
Public network information reviewed 2026-09-28. Participation and implementation stages may differ by organization.
How the exchange works
A governed path from authorized feed to production.
The operating model keeps standards, source authority and local policy visible at every stage.
Qualify the feed
Confirm authorization, public-data scope, quality expectations and a reliable takedown process.
Align the data
Use a RESO Web API and Data Dictionary implementation, or an agreed conversion path toward those standards.
Set the rules
Document display, privacy, attribution, audit and recipient requirements before exchange begins.
Pilot, verify, expand
Test the connection, monitor data health and move to production only after both sides validate the result.
The network today
See connections, organizations and markets in one place.
The live GDX Network Map is the operational view of the public network. Use it to explore participating nodes and their published information.
MLS industry directory
The people behind connected markets
The International MLS Forum Industry Directory maintains source-backed profiles for speakers, ambassadors, advisors and industry leaders. GDX links to those profiles instead of maintaining a second, quickly outdated people database.
Interested in connecting your organization?
Review the participation questions or contact GDX to begin a source, standards and policy assessment.