| City Geography Markup Language (CityGML) Encoding Standard 1.0 | Implementing |
| City Geography Markup Language (CityGML) Encoding Standard 2.0 | Implementing |
| Filter Encoding 1.0 | Implementing |
| Filter Encoding 2.0 Encoding Standard 2.0 | Implementing |
| Filter Encoding Implementation Specification 1.1 | Implementing |
| Geography Markup Language 1.0 | Implementing |
| Geography Markup Language 2.0 | Implementing |
| Geography Markup Language 2.1.1 | Implementing |
| Geography Markup Language 2.1.2 | Implementing |
| Geography Markup Language (GML) - Extended schemas and encoding rules 3.3 | Implementing |
| Geography Markup Language (GML) Encoding Specification 3.0 | Implementing |
| Geography Markup Language (GML) Encoding Specification 3.1.1 | Implementing |
| | City Geography Markup Language 0.3.0 | Implementing |
| | City Geography Markup Language 0.4.0 | Implementing |
| | GML 3.1.1 simple features profile 1.0.0 | Implementing |
| Geography Markup Language (GML) Encoding Standard 3.2.1 | Implementing |
| | Geography Markup Language (GML) simple features profile 2.0 | Implementing |
| | Geography Markup Language (GML) simple features profile (with Corrigendum) 2.0 | Implementing |
| | OWS-5 Engineering Report: Local MSD Implementation Profile (GML 3.2.1) 0.0.2 | Implementing |
| GeoRSS, An Introduction to 1.0.0 | Implementing |
| GML Point Profile 0.4 | Implementing |
| GML simple features profile 0.0.19 | Implementing |
| KML 2.2.0 | Implementing |
| KML 2.1 Reference - An OGC Best Practice 2.1.0 | Implementing |
| Temporal Standard Recommendations 0.0.9 | Implementing |
| Web Feature Service 1.0.0 | Implementing |
| Web Feature Service (WFS) Implementation Specification 1.1.0 | Implementing |
| Web Feature Service 2.0 Interface Standard (also ISO 19142) 2.0 | Implementing |