There is only one file type that uses the .XAIML extension:
XAIML Chatterbot Database File
File created in the Extended Artificial Intelligence Markup Language (XAIML), a language used to represent the artificial intelligence of chatterbots; contains a knowledge base that is used in conjunction with the ProgramPY-SH engine to simulate intelligent chat conversations.
XAIML files can be used by Neo (also "Neobot"), the chatterbot program that uses the XAIML language.
Updated: May 13, 2013