VoiceXML 2.1 Certified Platforms
The following platforms have passed the VoiceXML Forum Platform Certification Program for VoiceXML 2.1.
| VoiceXML version: | W3C VoiceXML 2.1 Recommendation June 19, 2007 |
| Test Suite versions: |
VoiceXML Forum Test Suite v1.0. |
| Vendor | CTR | Product Name | Product Version | Operating System | Telephony Interface | ASR engine | TTS engine | Date Certified |
| Advanced Technology Solutions | CTR | IVR Center | 4.0.0.0 | Windows 2003 Server Standard Edition SP2 | SIP | Nuance Recognizer 9.0.6 | Realspeak 4.5 | January 7, 2011 |
| Genesys | CTR | Genesys Voice Portal | 8.1.1 | Windows 2003 Server | SIP | Nuance Recognizer 9.0.7 | Realspeak 4.5 | April 19, 2010 |
| Hewlett Packard Corp | CTR | HP OpenCall Media Platform VoiceXML | 4.4 | RedHat Enterprise Linux Server 6.1 | SIP | Nuance 9.0 | RealSpeak 4.5.4 | November 7, 2012 |
| Holly Connects | CTR | Holly Voice Platform | 5.1 SP2 | Red Hat Linux 5.4 | SIP | Nuance 9.0.11 | Vocalizer NSS5.0.8 | November 22, 2010 |
| Loquendo | CTR | VoxNauta Platform | 7.1 | Windows 2003 | SIP | Loquendo ASR 7.8.1 | Loquendo TTS 7.8.4 | April 19, 2010 |
| Nuance | CTR | Nuance Voice Platform | 4.0 SP1 | Microsoft Windows 2003 Server SP2 | SIP | Nuance Recognizer 9.0.12 | Nuance Vocalizer 5.0.2 |
April 19, 2010 |
| Unisys | CTR | Unisys Speech Services Platform | 12 | Red Hat Enterprise Linux 5.3 | SIP | Nuance Recognizer 9.0.12 | Nuance Vocalizer 5.0.5 | October 18, 2012 |