See Web Services Translator for access to:
See the OData Translator
Big Data/No SQL/Search Engines/JCR and Other Sources
See the LDAP Translator for access to:
RedHat Directory Server
This represents data sources that have been validated to work using the available translators and connectors. However, this does not preclude a new data source from working. It can be as easy as extending an existing translator, to creating a new translator using the Translator Development extensions.
Take a look at the list of Translators that are used as the bridge between Teiid and the external system.