- SOS -Sensor Observation Service
This tool uses the Observations and Measurements standard to define a Web service interface which allows querying observations, sensor metadata, as well as representations of observed features.
- BGS NGDC - British Geological Survey National Geoscience Data Centre
The world's oldest national geological survey and the United Kingdom's premier centre for earth science information and expertise, with information access via an ISO 19115-compliant discovery metadata database.
- Marine Geoscience Data System
An online portal providing access to a number of NSF-supported marine geoscience projects, which has developed its own metadata requirements.
- UK Polar Data Centre
An organisation coordinating the management of data collected by UK-funded scientists in the polar regions, using an application profile that is harmonious with both ISO 19115 and DIF.
- ABCD - Access to Biological Collection Data
A standard for the access to and exchange of primary biodiversity data, including specimens and observations.
- Observations and Measurements
This standard specifies an XML implementation for the OGC and ISO Observations and Measurements (O&M) conceptual model, including a schema for Sampling Features.