C
- Call Control eXtensible Markup Language: a standard designed to provide telephony support to VoiceXML
- CellML: a language describing mathematical models
- Channel Definition Format
- Chemical Markup Language
- ClaML : Classification Markup Language for health informatics, accepted as European Norm EN 14463:2007.
- Clinical Data Interchange Standards Consortium
- Clinical Document Architecture
- CMRL: a markup language for concise message content
- COLLADA: a standard for exchanging digital assets among various graphics software applications
- Common Alerting Protocol (CAP)
- CXML: a protocol intended for communication of business documents between procurement applications, e-commerce hubs and suppliers
Read more about this topic: List Of XML Markup Languages