This category is for resources on VoiceXML, a markup language for voice applications. Voice XML is a now standard endorsed and maintained by the W3C (World Wide Web consortium).
VXML is designed to create audio dialogs that feature synthesized speech, digitized audio, recognition of spoken and DTMF key input, recording of spoken input, telephony, and mixed-initiative conversations.
This category is for technical resources relating to the markup language: specifications, and portals about VXML languages, tutorials.
For development tools and environments, hosting, and VXML development services, please prefer the appropriate subcategory. Sites related to the underlying technology or implementation platforms should go in Computers/Speech_Technology.