VoiceXml Yahoo Group
- VoiceXml user group at Yahoo. Includes discussions and experiences with VoiceXML syntax and applications.
- http://tech.groups.yahoo.com/group/voicexml/

"Definitive VXML" book: code examples
- Interesting numerous VXML examples from the book "Definitive VXML"
- http://www.voicexml.org/edu/examples/definitive_vxml.html

VoiceXML Italian User Group.
- Italian site which regroups the VoiceXML users. Includes tutorials, articles and links to VXML resources (in Italian and in english).
- http://www.vxmlitalia.com/

Voice category at developer.com
- Voice-technology related tutorials and articles including introduction to VXML, natural vs directed dialogs, SRGS and CCXML introductions
- http://www.developer.com/voice/

XHTML+Voice Profile 1.0 (W3C Note)
- XHTML+Voice profile is designed for Web clients that support visual and spoken interaction.
- http://www.w3.org/TR/xhtml+voice/

Palowireless VoiceXML Resource Center
- VoiceXML Resources including conferences, articles, news, development tools, market research, technology, tutorials.
- http://www.palowireless.com/voicexml

W3C's Introduction to VoiceXML 2.0
- A nice VXML tutorial provided by Dave Raggett to the W3C. A great introduction to VXML with code samples.
- http://www.w3.org/Voice/Guide/

Ecmascript language specification (ECMA-262)
- The ECMAScript language that is used by VXML to provide client-side scripting capabilities. Compact profile ECMA-367 is used within SRGS grammars to support semantic interpretation.
- http://www.ecma-international.org/publications/standards/Ecma-262.htm

Semantic Interpretation for Speech Recognition (SISR)
- The specifications which describes how tags within SRGS grammars may be inserted to support basic post-processing or full semantic interpretation. This is then used by VXML to support advanced features such as mixed initiative.
- http://www.w3.org/TR/semantic-interpretation/

Voice Browser Call Control: CCXML Version 1.0
- The upcoming call control language for more elaborate control than VXML transfer. CCXML uses VXML to specify dialogs with connected call parties.
- http://www.w3.org/TR/ccxml/

Speech Synthesis Markup Language (SSML) Version 1.0
- The W3C specifications used by VXML to provide speech synthesis.
- http://www.w3.org/TR/speech-synthesis/

Speech Recognition Grammar Specification (SRGS) Version 1.0
- The W3C specifications used by VXML to enable speech recognition
- http://www.w3.org/TR/speech-grammar/

Ken Rehor's World of VoiceXML
- Comprehensive index of VXML resources and events maintained by Ken Rehor, the "principal founder of the VoiceXML Forum"
- http://www.kenrehor.com/voicexml/

Voice Extensible Markup Language (VXML) Version 2.1
- The pointer to the latest 2.1 draft specifications including errata. Version 2.1 is a minor refinement of 2.0 with features that are simple, already implemented by some vendors, and not already available within 2.0 version.
- http://www.w3.org/TR/voicexml21/

VXML Tutorial for Perl Programmers
- WebReference.com's tutorial on VoiceXML, entitled "Tellme More."
- http://www.webreference.com/perl/tutorial/20/

Voice Extensible Markup Language (VXML) Version 2.0
- Pointer to the latest 2.0 specification including new errata published by the W3C consortium.
- http://www.w3.org/TR/voicexml20/

W3C: Voice Browser Activity
- Portal of the activity of the W3C Voice Browser Working Group including public mailing list, links to current status, work under development, links to drafts and specifications, FAQs.
- http://www.w3.org/Voice/

VoiceXML Forum
- Organization dedicated to promoting VXML. Main activities include developer and platform certifications, education (tutorials and newsletters), and tools fostering. Delegates VXML standardisation to W3C. Hosted by IEEE-ISTO.
- http://www.voicexml.org/

Voice Extensible Markup Language (VXML) version 1.0
- Official note specification; designed for creating audio dialogs that feature synthesized speech, digitized audio, recognition of spoken and DTMF key input, recording of spoken input, telephony, and mixed-initiative conversations. (W3C Note 05 May 2000)
- http://www.w3.org/TR/voicexml/