G
- Geography Markup Language: a grammar defined by the Open Geospatial Consortium (OGC) to express geographical features
- GJXDM: a data reference model for the exchange of information within the justice and public safety communities
- GPX: a language designed for transferring GPS data between software applications
- GraphML: a standard exchange format for graphs
- GuideML
- GXA: an extension of SOAP being worked on by Microsoft, IBM and some other developers
- GXL: a standard exchange format for graphs
- Green Building XML: also known as "gbXML", a schema to facilitate the transfer of building properties stored in 3D building information models (BIM) to engineering analysis tools, especially energy and building performance analysis
Read more about this topic: List Of XML Markup Languages