Dragon1 EA Modeling Language (EAML) is a set of 400+ entity classes or concepts, symbols and rules for creating (in)formal Enterprise Architecture models.
ArchiMate® is an Open Group Standard, claimed to be an open independent modeling language for enterprise architecture, supported by different tool vendors.
BPMN - Business Process Modeling Notation is a graphical representation for specifying business processes in a business process model - swimlane diagram.
UML is an open modeling language, mainly to design software applications and information systems with. You can model in UML on Dragon1.